20444840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{39317}}^1$

素因数の和:39341

約数の個数: 32

約数和(自身を含む): 49540680

約数和(自身を除く): 29095840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 39317, 78634, 157268, 196585, 314536, 393170, 511121, 786340, 1022242, 1572680, 2044484, 2555605, 4088968, 5111210, 10222420, 20444840]

約数ペア:

[(1, 20444840), (2, 10222420), (4, 5111210), (5, 4088968), (8, 2555605), (10, 2044484), (13, 1572680), (20, 1022242), (26, 786340), (40, 511121), (52, 393170), (65, 314536), (104, 196585), (130, 157268), (260, 78634), (520, 39317)]