21080480

素因数分解:

$2^5\times 5^1\times {\mathrm{359}}^1\times {\mathrm{367}}^1$

素因数の和:741

約数の個数: 48

約数和(自身を含む): 50077440

約数和(自身を除く): 28996960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 359, 367, 718, 734, 1436, 1468, 1795, 1835, 2872, 2936, 3590, 3670, 5744, 5872, 7180, 7340, 11488, 11744, 14360, 14680, 28720, 29360, 57440, 58720, 131753, 263506, 527012, 658765, 1054024, 1317530, 2108048, 2635060, 4216096, 5270120, 10540240, 21080480]

約数ペア:

[(1, 21080480), (2, 10540240), (4, 5270120), (5, 4216096), (8, 2635060), (10, 2108048), (16, 1317530), (20, 1054024), (32, 658765), (40, 527012), (80, 263506), (160, 131753), (359, 58720), (367, 57440), (718, 29360), (734, 28720), (1436, 14680), (1468, 14360), (1795, 11744), (1835, 11488), (2872, 7340), (2936, 7180), (3590, 5872), (3670, 5744)]