263473640

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{107981}}^1$

素因数の和:108053

約数の個数: 32

約数和(自身を含む): 602539560

約数和(自身を除く): 339065920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 107981, 215962, 431924, 539905, 863848, 1079810, 2159620, 4319240, 6586841, 13173682, 26347364, 32934205, 52694728, 65868410, 131736820, 263473640]

約数ペア:

[(1, 263473640), (2, 131736820), (4, 65868410), (5, 52694728), (8, 32934205), (10, 26347364), (20, 13173682), (40, 6586841), (61, 4319240), (122, 2159620), (244, 1079810), (305, 863848), (488, 539905), (610, 431924), (1220, 215962), (2440, 107981)]