21571970

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{9941}}^1$

素因数の和:9986

約数の個数: 32

約数和(自身を含む): 45812736

約数和(自身を除く): 24240766

約数列:

[1, 2, 5, 7, 10, 14, 31, 35, 62, 70, 155, 217, 310, 434, 1085, 2170, 9941, 19882, 49705, 69587, 99410, 139174, 308171, 347935, 616342, 695870, 1540855, 2157197, 3081710, 4314394, 10785985, 21571970]

約数ペア:

[(1, 21571970), (2, 10785985), (5, 4314394), (7, 3081710), (10, 2157197), (14, 1540855), (31, 695870), (35, 616342), (62, 347935), (70, 308171), (155, 139174), (217, 99410), (310, 69587), (434, 49705), (1085, 19882), (2170, 9941)]