631881640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1215157}}^1$

素因数の和:1215181

約数の個数: 32

約数和(自身を含む): 1531099080

約数和(自身を除く): 899217440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 1215157, 2430314, 4860628, 6075785, 9721256, 12151570, 15797041, 24303140, 31594082, 48606280, 63188164, 78985205, 126376328, 157970410, 315940820, 631881640]

約数ペア:

[(1, 631881640), (2, 315940820), (4, 157970410), (5, 126376328), (8, 78985205), (10, 63188164), (13, 48606280), (20, 31594082), (26, 24303140), (40, 15797041), (52, 12151570), (65, 9721256), (104, 6075785), (130, 4860628), (260, 2430314), (520, 1215157)]