20141680

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{181}}^1$

素因数の和:314

約数の個数: 80

約数和(自身を含む): 51184224

約数和(自身を除く): 31042544

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 107, 130, 181, 208, 214, 260, 362, 428, 520, 535, 724, 856, 905, 1040, 1070, 1391, 1448, 1712, 1810, 2140, 2353, 2782, 2896, 3620, 4280, 4706, 5564, 6955, 7240, 8560, 9412, 11128, 11765, 13910, 14480, 18824, 19367, 22256, 23530, 27820, 37648, 38734, 47060, 55640, 77468, 94120, 96835, 111280, 154936, 188240, 193670, 251771, 309872, 387340, 503542, 774680, 1007084, 1258855, 1549360, 2014168, 2517710, 4028336, 5035420, 10070840, 20141680]

約数ペア:

[(1, 20141680), (2, 10070840), (4, 5035420), (5, 4028336), (8, 2517710), (10, 2014168), (13, 1549360), (16, 1258855), (20, 1007084), (26, 774680), (40, 503542), (52, 387340), (65, 309872), (80, 251771), (104, 193670), (107, 188240), (130, 154936), (181, 111280), (208, 96835), (214, 94120), (260, 77468), (362, 55640), (428, 47060), (520, 38734), (535, 37648), (724, 27820), (856, 23530), (905, 22256), (1040, 19367), (1070, 18824), (1391, 14480), (1448, 13910), (1712, 11765), (1810, 11128), (2140, 9412), (2353, 8560), (2782, 7240), (2896, 6955), (3620, 5564), (4280, 4706)]