20187375975

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{22481}}^1$

素因数の和:22817

約数の個数: 72

約数和(自身を含む): 39067780752

約数和(自身を除く): 18880404777

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 195, 225, 307, 325, 585, 921, 975, 1535, 2763, 2925, 3991, 4605, 7675, 11973, 13815, 19955, 22481, 23025, 35919, 59865, 67443, 69075, 99775, 112405, 179595, 202329, 292253, 299325, 337215, 562025, 876759, 897975, 1011645, 1461265, 1686075, 2630277, 4383795, 5058225, 6901667, 7306325, 13151385, 20705001, 21918975, 34508335, 62115003, 65756925, 89721671, 103525005, 172541675, 269165013, 310575015, 448608355, 517625025, 807495039, 1345825065, 1552875075, 2243041775, 4037475195, 6729125325, 20187375975]

約数ペア:

[(1, 20187375975), (3, 6729125325), (5, 4037475195), (9, 2243041775), (13, 1552875075), (15, 1345825065), (25, 807495039), (39, 517625025), (45, 448608355), (65, 310575015), (75, 269165013), (117, 172541675), (195, 103525005), (225, 89721671), (307, 65756925), (325, 62115003), (585, 34508335), (921, 21918975), (975, 20705001), (1535, 13151385), (2763, 7306325), (2925, 6901667), (3991, 5058225), (4605, 4383795), (7675, 2630277), (11973, 1686075), (13815, 1461265), (19955, 1011645), (22481, 897975), (23025, 876759), (35919, 562025), (59865, 337215), (67443, 299325), (69075, 292253), (99775, 202329), (112405, 179595)]