151221640

素因数分解:

$2^3\times 5^1\times {\mathrm{3780541}}^1$

素因数の和:3780552

約数の個数: 16

約数和(自身を含む): 340248780

約数和(自身を除く): 189027140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3780541, 7561082, 15122164, 18902705, 30244328, 37805410, 75610820, 151221640]

約数ペア:

[(1, 151221640), (2, 75610820), (4, 37805410), (5, 30244328), (8, 18902705), (10, 15122164), (20, 7561082), (40, 3780541)]