21115640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5801}}^1$

素因数の和:5832

約数の個数: 64

約数和(自身を含む): 58484160

約数和(自身を除く): 37368520

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 5801, 11602, 23204, 29005, 40607, 46408, 58010, 75413, 81214, 116020, 150826, 162428, 203035, 232040, 301652, 324856, 377065, 406070, 527891, 603304, 754130, 812140, 1055782, 1508260, 1624280, 2111564, 2639455, 3016520, 4223128, 5278910, 10557820, 21115640]

約数ペア:

[(1, 21115640), (2, 10557820), (4, 5278910), (5, 4223128), (7, 3016520), (8, 2639455), (10, 2111564), (13, 1624280), (14, 1508260), (20, 1055782), (26, 812140), (28, 754130), (35, 603304), (40, 527891), (52, 406070), (56, 377065), (65, 324856), (70, 301652), (91, 232040), (104, 203035), (130, 162428), (140, 150826), (182, 116020), (260, 81214), (280, 75413), (364, 58010), (455, 46408), (520, 40607), (728, 29005), (910, 23204), (1820, 11602), (3640, 5801)]