20112812500

素因数分解:

$2^2\times 5^7\times {\mathrm{11}}^1\times {\mathrm{5851}}^1$

素因数の和:5901

約数の個数: 96

約数和(自身を含む): 48004564608

約数和(自身を除く): 27891752108

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 125, 220, 250, 275, 500, 550, 625, 1100, 1250, 1375, 2500, 2750, 3125, 5500, 5851, 6250, 6875, 11702, 12500, 13750, 15625, 23404, 27500, 29255, 31250, 34375, 58510, 62500, 64361, 68750, 78125, 117020, 128722, 137500, 146275, 156250, 171875, 257444, 292550, 312500, 321805, 343750, 585100, 643610, 687500, 731375, 859375, 1287220, 1462750, 1609025, 1718750, 2925500, 3218050, 3437500, 3656875, 6436100, 7313750, 8045125, 14627500, 16090250, 18284375, 32180500, 36568750, 40225625, 73137500, 80451250, 91421875, 160902500, 182843750, 201128125, 365687500, 402256250, 457109375, 804512500, 914218750, 1005640625, 1828437500, 2011281250, 4022562500, 5028203125, 10056406250, 20112812500]

約数ペア:

[(1, 20112812500), (2, 10056406250), (4, 5028203125), (5, 4022562500), (10, 2011281250), (11, 1828437500), (20, 1005640625), (22, 914218750), (25, 804512500), (44, 457109375), (50, 402256250), (55, 365687500), (100, 201128125), (110, 182843750), (125, 160902500), (220, 91421875), (250, 80451250), (275, 73137500), (500, 40225625), (550, 36568750), (625, 32180500), (1100, 18284375), (1250, 16090250), (1375, 14627500), (2500, 8045125), (2750, 7313750), (3125, 6436100), (5500, 3656875), (5851, 3437500), (6250, 3218050), (6875, 2925500), (11702, 1718750), (12500, 1609025), (13750, 1462750), (15625, 1287220), (23404, 859375), (27500, 731375), (29255, 687500), (31250, 643610), (34375, 585100), (58510, 343750), (62500, 321805), (64361, 312500), (68750, 292550), (78125, 257444), (117020, 171875), (128722, 156250), (137500, 146275)]