20987070

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53813}}^1$

素因数の和:53836

約数の個数: 32

約数和(自身を含む): 54244512

約数和(自身を除く): 33257442

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 53813, 107626, 161439, 269065, 322878, 538130, 699569, 807195, 1399138, 1614390, 2098707, 3497845, 4197414, 6995690, 10493535, 20987070]

約数ペア:

[(1, 20987070), (2, 10493535), (3, 6995690), (5, 4197414), (6, 3497845), (10, 2098707), (13, 1614390), (15, 1399138), (26, 807195), (30, 699569), (39, 538130), (65, 322878), (78, 269065), (130, 161439), (195, 107626), (390, 53813)]