20259250

素因数分解:

$2^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1$

素因数の和:220

約数の個数: 64

約数和(自身を含む): 42456960

約数和(自身を除く): 22197710

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 53, 55, 106, 110, 125, 139, 250, 265, 275, 278, 530, 550, 583, 695, 1166, 1325, 1375, 1390, 1529, 2650, 2750, 2915, 3058, 3475, 5830, 6625, 6950, 7367, 7645, 13250, 14575, 14734, 15290, 17375, 29150, 34750, 36835, 38225, 72875, 73670, 76450, 81037, 145750, 162074, 184175, 191125, 368350, 382250, 405185, 810370, 920875, 1841750, 2025925, 4051850, 10129625, 20259250]

約数ペア:

[(1, 20259250), (2, 10129625), (5, 4051850), (10, 2025925), (11, 1841750), (22, 920875), (25, 810370), (50, 405185), (53, 382250), (55, 368350), (106, 191125), (110, 184175), (125, 162074), (139, 145750), (250, 81037), (265, 76450), (275, 73670), (278, 72875), (530, 38225), (550, 36835), (583, 34750), (695, 29150), (1166, 17375), (1325, 15290), (1375, 14734), (1390, 14575), (1529, 13250), (2650, 7645), (2750, 7367), (2915, 6950), (3058, 6625), (3475, 5830)]