221991380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{853813}}^1$

素因数の和:853835

約数の個数: 24

約数和(自身を含む): 502042632

約数和(自身を除く): 280051252

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 853813, 1707626, 3415252, 4269065, 8538130, 11099569, 17076260, 22199138, 44398276, 55497845, 110995690, 221991380]

約数ペア:

[(1, 221991380), (2, 110995690), (4, 55497845), (5, 44398276), (10, 22199138), (13, 17076260), (20, 11099569), (26, 8538130), (52, 4269065), (65, 3415252), (130, 1707626), (260, 853813)]