251490160

素因数分解:

$2^4\times 5^1\times {\mathrm{643}}^1\times {\mathrm{4889}}^1$

素因数の和:5545

約数の個数: 40

約数和(自身を含む): 585743760

約数和(自身を除く): 334253600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 643, 1286, 2572, 3215, 4889, 5144, 6430, 9778, 10288, 12860, 19556, 24445, 25720, 39112, 48890, 51440, 78224, 97780, 195560, 391120, 3143627, 6287254, 12574508, 15718135, 25149016, 31436270, 50298032, 62872540, 125745080, 251490160]

約数ペア:

[(1, 251490160), (2, 125745080), (4, 62872540), (5, 50298032), (8, 31436270), (10, 25149016), (16, 15718135), (20, 12574508), (40, 6287254), (80, 3143627), (643, 391120), (1286, 195560), (2572, 97780), (3215, 78224), (4889, 51440), (5144, 48890), (6430, 39112), (9778, 25720), (10288, 24445), (12860, 19556)]