39977600

素因数分解:

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

素因数の和:99

約数の個数: 144

約数和(自身を含む): 109895310

約数和(自身を除く): 69917710

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, 128, 130, 155, 160, 200, 208, 248, 260, 310, 320, 325, 400, 403, 416, 496, 520, 620, 640, 650, 775, 800, 806, 832, 961, 992, 1040, 1240, 1300, 1550, 1600, 1612, 1664, 1922, 1984, 2015, 2080, 2480, 2600, 3100, 3200, 3224, 3844, 3968, 4030, 4160, 4805, 4960, 5200, 6200, 6448, 7688, 8060, 8320, 9610, 9920, 10075, 10400, 12400, 12493, 12896, 15376, 16120, 19220, 19840, 20150, 20800, 24025, 24800, 24986, 25792, 30752, 32240, 38440, 40300, 41600, 48050, 49600, 49972, 51584, 61504, 62465, 64480, 76880, 80600, 96100, 99200, 99944, 123008, 124930, 128960, 153760, 161200, 192200, 199888, 249860, 257920, 307520, 312325, 322400, 384400, 399776, 499720, 615040, 624650, 644800, 768800, 799552, 999440, 1249300, 1289600, 1537600, 1599104, 1998880, 2498600, 3075200, 3997760, 4997200, 7995520, 9994400, 19988800, 39977600]

約数ペア:

[(1, 39977600), (2, 19988800), (4, 9994400), (5, 7995520), (8, 4997200), (10, 3997760), (13, 3075200), (16, 2498600), (20, 1998880), (25, 1599104), (26, 1537600), (31, 1289600), (32, 1249300), (40, 999440), (50, 799552), (52, 768800), (62, 644800), (64, 624650), (65, 615040), (80, 499720), (100, 399776), (104, 384400), (124, 322400), (128, 312325), (130, 307520), (155, 257920), (160, 249860), (200, 199888), (208, 192200), (248, 161200), (260, 153760), (310, 128960), (320, 124930), (325, 123008), (400, 99944), (403, 99200), (416, 96100), (496, 80600), (520, 76880), (620, 64480), (640, 62465), (650, 61504), (775, 51584), (800, 49972), (806, 49600), (832, 48050), (961, 41600), (992, 40300), (1040, 38440), (1240, 32240), (1300, 30752), (1550, 25792), (1600, 24986), (1612, 24800), (1664, 24025), (1922, 20800), (1984, 20150), (2015, 19840), (2080, 19220), (2480, 16120), (2600, 15376), (3100, 12896), (3200, 12493), (3224, 12400), (3844, 10400), (3968, 10075), (4030, 9920), (4160, 9610), (4805, 8320), (4960, 8060), (5200, 7688), (6200, 6448)]