20697430

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{331}}^1$

素因数の和:401

約数の個数: 48

約数和(自身を含む): 41557104

約数和(自身を除く): 20859674

約数列:

[1, 2, 5, 10, 13, 26, 37, 65, 74, 130, 169, 185, 331, 338, 370, 481, 662, 845, 962, 1655, 1690, 2405, 3310, 4303, 4810, 6253, 8606, 12247, 12506, 21515, 24494, 31265, 43030, 55939, 61235, 62530, 111878, 122470, 159211, 279695, 318422, 559390, 796055, 1592110, 2069743, 4139486, 10348715, 20697430]

約数ペア:

[(1, 20697430), (2, 10348715), (5, 4139486), (10, 2069743), (13, 1592110), (26, 796055), (37, 559390), (65, 318422), (74, 279695), (130, 159211), (169, 122470), (185, 111878), (331, 62530), (338, 61235), (370, 55939), (481, 43030), (662, 31265), (845, 24494), (962, 21515), (1655, 12506), (1690, 12247), (2405, 8606), (3310, 6253), (4303, 4810)]