999440000

素因数分解:

$2^7\times 5^4\times {\mathrm{13}}^1\times {\mathrm{31}}^2$

素因数の和:109

約数の個数: 240

約数和(自身を含む): 2768652810

約数和(自身を除く): 1769212810

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 31, 32, 40, 50, 52, 62, 64, 65, 80, 100, 104, 124, 125, 128, 130, 155, 160, 200, 208, 248, 250, 260, 310, 320, 325, 400, 403, 416, 496, 500, 520, 620, 625, 640, 650, 775, 800, 806, 832, 961, 992, 1000, 1040, 1240, 1250, 1300, 1550, 1600, 1612, 1625, 1664, 1922, 1984, 2000, 2015, 2080, 2480, 2500, 2600, 3100, 3200, 3224, 3250, 3844, 3875, 3968, 4000, 4030, 4160, 4805, 4960, 5000, 5200, 6200, 6448, 6500, 7688, 7750, 8000, 8060, 8125, 8320, 9610, 9920, 10000, 10075, 10400, 12400, 12493, 12896, 13000, 15376, 15500, 16000, 16120, 16250, 19220, 19375, 19840, 20000, 20150, 20800, 24025, 24800, 24986, 25792, 26000, 30752, 31000, 32240, 32500, 38440, 38750, 40000, 40300, 41600, 48050, 49600, 49972, 50375, 51584, 52000, 61504, 62000, 62465, 64480, 65000, 76880, 77500, 80000, 80600, 96100, 99200, 99944, 100750, 104000, 120125, 123008, 124000, 124930, 128960, 130000, 153760, 155000, 161200, 192200, 199888, 201500, 208000, 240250, 248000, 249860, 251875, 257920, 260000, 307520, 310000, 312325, 322400, 384400, 399776, 403000, 480500, 496000, 499720, 503750, 520000, 600625, 615040, 620000, 624650, 644800, 768800, 799552, 806000, 961000, 999440, 1007500, 1040000, 1201250, 1240000, 1249300, 1289600, 1537600, 1561625, 1599104, 1612000, 1922000, 1998880, 2015000, 2402500, 2480000, 2498600, 3075200, 3123250, 3224000, 3844000, 3997760, 4030000, 4805000, 4997200, 6246500, 6448000, 7688000, 7808125, 7995520, 8060000, 9610000, 9994400, 12493000, 15376000, 15616250, 16120000, 19220000, 19988800, 24986000, 31232500, 32240000, 38440000, 39977600, 49972000, 62465000, 76880000, 99944000, 124930000, 199888000, 249860000, 499720000, 999440000]

約数ペア:

[(1, 999440000), (2, 499720000), (4, 249860000), (5, 199888000), (8, 124930000), (10, 99944000), (13, 76880000), (16, 62465000), (20, 49972000), (25, 39977600), (26, 38440000), (31, 32240000), (32, 31232500), (40, 24986000), (50, 19988800), (52, 19220000), (62, 16120000), (64, 15616250), (65, 15376000), (80, 12493000), (100, 9994400), (104, 9610000), (124, 8060000), (125, 7995520), (128, 7808125), (130, 7688000), (155, 6448000), (160, 6246500), (200, 4997200), (208, 4805000), (248, 4030000), (250, 3997760), (260, 3844000), (310, 3224000), (320, 3123250), (325, 3075200), (400, 2498600), (403, 2480000), (416, 2402500), (496, 2015000), (500, 1998880), (520, 1922000), (620, 1612000), (625, 1599104), (640, 1561625), (650, 1537600), (775, 1289600), (800, 1249300), (806, 1240000), (832, 1201250), (961, 1040000), (992, 1007500), (1000, 999440), (1040, 961000), (1240, 806000), (1250, 799552), (1300, 768800), (1550, 644800), (1600, 624650), (1612, 620000), (1625, 615040), (1664, 600625), (1922, 520000), (1984, 503750), (2000, 499720), (2015, 496000), (2080, 480500), (2480, 403000), (2500, 399776), (2600, 384400), (3100, 322400), (3200, 312325), (3224, 310000), (3250, 307520), (3844, 260000), (3875, 257920), (3968, 251875), (4000, 249860), (4030, 248000), (4160, 240250), (4805, 208000), (4960, 201500), (5000, 199888), (5200, 192200), (6200, 161200), (6448, 155000), (6500, 153760), (7688, 130000), (7750, 128960), (8000, 124930), (8060, 124000), (8125, 123008), (8320, 120125), (9610, 104000), (9920, 100750), (10000, 99944), (10075, 99200), (10400, 96100), (12400, 80600), (12493, 80000), (12896, 77500), (13000, 76880), (15376, 65000), (15500, 64480), (16000, 62465), (16120, 62000), (16250, 61504), (19220, 52000), (19375, 51584), (19840, 50375), (20000, 49972), (20150, 49600), (20800, 48050), (24025, 41600), (24800, 40300), (24986, 40000), (25792, 38750), (26000, 38440), (30752, 32500), (31000, 32240)]