655749020

素因数分解:

$2^2\times 5^1\times {\mathrm{1613}}^1\times {\mathrm{20327}}^1$

素因数の和:21949

約数の個数: 24

約数和(自身を含む): 1377994464

約数和(自身を除く): 722245444

約数列:

[1, 2, 4, 5, 10, 20, 1613, 3226, 6452, 8065, 16130, 20327, 32260, 40654, 81308, 101635, 203270, 406540, 32787451, 65574902, 131149804, 163937255, 327874510, 655749020]

約数ペア:

[(1, 655749020), (2, 327874510), (4, 163937255), (5, 131149804), (10, 65574902), (20, 32787451), (1613, 406540), (3226, 203270), (6452, 101635), (8065, 81308), (16130, 40654), (20327, 32260)]