9912500

素因数分解:

$2^2\times 5^5\times {\mathrm{13}}^1\times {\mathrm{61}}^1$

素因数の和:103

約数の個数: 72

約数和(自身を含む): 23732856

約数和(自身を除く): 13820356

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 61, 65, 100, 122, 125, 130, 244, 250, 260, 305, 325, 500, 610, 625, 650, 793, 1220, 1250, 1300, 1525, 1586, 1625, 2500, 3050, 3125, 3172, 3250, 3965, 6100, 6250, 6500, 7625, 7930, 8125, 12500, 15250, 15860, 16250, 19825, 30500, 32500, 38125, 39650, 40625, 76250, 79300, 81250, 99125, 152500, 162500, 190625, 198250, 381250, 396500, 495625, 762500, 991250, 1982500, 2478125, 4956250, 9912500]

約数ペア:

[(1, 9912500), (2, 4956250), (4, 2478125), (5, 1982500), (10, 991250), (13, 762500), (20, 495625), (25, 396500), (26, 381250), (50, 198250), (52, 190625), (61, 162500), (65, 152500), (100, 99125), (122, 81250), (125, 79300), (130, 76250), (244, 40625), (250, 39650), (260, 38125), (305, 32500), (325, 30500), (500, 19825), (610, 16250), (625, 15860), (650, 15250), (793, 12500), (1220, 8125), (1250, 7930), (1300, 7625), (1525, 6500), (1586, 6250), (1625, 6100), (2500, 3965), (3050, 3250), (3125, 3172)]