31232500

素因数分解:

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

素因数の和:99

約数の個数: 90

約数和(自身を含む): 76002234

約数和(自身を除く): 44769734

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 31, 50, 52, 62, 65, 100, 124, 125, 130, 155, 250, 260, 310, 325, 403, 500, 620, 625, 650, 775, 806, 961, 1250, 1300, 1550, 1612, 1625, 1922, 2015, 2500, 3100, 3250, 3844, 3875, 4030, 4805, 6500, 7750, 8060, 8125, 9610, 10075, 12493, 15500, 16250, 19220, 19375, 20150, 24025, 24986, 32500, 38750, 40300, 48050, 49972, 50375, 62465, 77500, 96100, 100750, 120125, 124930, 201500, 240250, 249860, 251875, 312325, 480500, 503750, 600625, 624650, 1007500, 1201250, 1249300, 1561625, 2402500, 3123250, 6246500, 7808125, 15616250, 31232500]

約数ペア:

[(1, 31232500), (2, 15616250), (4, 7808125), (5, 6246500), (10, 3123250), (13, 2402500), (20, 1561625), (25, 1249300), (26, 1201250), (31, 1007500), (50, 624650), (52, 600625), (62, 503750), (65, 480500), (100, 312325), (124, 251875), (125, 249860), (130, 240250), (155, 201500), (250, 124930), (260, 120125), (310, 100750), (325, 96100), (403, 77500), (500, 62465), (620, 50375), (625, 49972), (650, 48050), (775, 40300), (806, 38750), (961, 32500), (1250, 24986), (1300, 24025), (1550, 20150), (1612, 19375), (1625, 19220), (1922, 16250), (2015, 15500), (2500, 12493), (3100, 10075), (3250, 9610), (3844, 8125), (3875, 8060), (4030, 7750), (4805, 6500)]