690654320

素因数分解:

$2^4\times 5^1\times {\mathrm{1861}}^1\times {\mathrm{4639}}^1$

素因数の和:6513

約数の個数: 40

約数和(自身を含む): 1606980480

約数和(自身を除く): 916326160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1861, 3722, 4639, 7444, 9278, 9305, 14888, 18556, 18610, 23195, 29776, 37112, 37220, 46390, 74224, 74440, 92780, 148880, 185560, 371120, 8633179, 17266358, 34532716, 43165895, 69065432, 86331790, 138130864, 172663580, 345327160, 690654320]

約数ペア:

[(1, 690654320), (2, 345327160), (4, 172663580), (5, 138130864), (8, 86331790), (10, 69065432), (16, 43165895), (20, 34532716), (40, 17266358), (80, 8633179), (1861, 371120), (3722, 185560), (4639, 148880), (7444, 92780), (9278, 74440), (9305, 74224), (14888, 46390), (18556, 37220), (18610, 37112), (23195, 29776)]