397392040

素因数分解:

$2^3\times 5^1\times {\mathrm{9934801}}^1$

素因数の和:9934812

約数の個数: 16

約数和(自身を含む): 894132180

約数和(自身を除く): 496740140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 9934801, 19869602, 39739204, 49674005, 79478408, 99348010, 198696020, 397392040]

約数ペア:

[(1, 397392040), (2, 198696020), (4, 99348010), (5, 79478408), (8, 49674005), (10, 39739204), (20, 19869602), (40, 9934801)]