21413730

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{54907}}^1$

素因数の和:54930

約数の個数: 32

約数和(自身を含む): 55347264

約数和(自身を除く): 33933534

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 54907, 109814, 164721, 274535, 329442, 549070, 713791, 823605, 1427582, 1647210, 2141373, 3568955, 4282746, 7137910, 10706865, 21413730]

約数ペア:

[(1, 21413730), (2, 10706865), (3, 7137910), (5, 4282746), (6, 3568955), (10, 2141373), (13, 1647210), (15, 1427582), (26, 823605), (30, 713791), (39, 549070), (65, 329442), (78, 274535), (130, 164721), (195, 109814), (390, 54907)]