71656880

素因数分解:

$2^4\times 5^1\times {\mathrm{821}}^1\times {\mathrm{1091}}^1$

素因数の和:1925

約数の個数: 40

約数和(自身を含む): 166958064

約数和(自身を除く): 95301184

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 821, 1091, 1642, 2182, 3284, 4105, 4364, 5455, 6568, 8210, 8728, 10910, 13136, 16420, 17456, 21820, 32840, 43640, 65680, 87280, 895711, 1791422, 3582844, 4478555, 7165688, 8957110, 14331376, 17914220, 35828440, 71656880]

約数ペア:

[(1, 71656880), (2, 35828440), (4, 17914220), (5, 14331376), (8, 8957110), (10, 7165688), (16, 4478555), (20, 3582844), (40, 1791422), (80, 895711), (821, 87280), (1091, 65680), (1642, 43640), (2182, 32840), (3284, 21820), (4105, 17456), (4364, 16420), (5455, 13136), (6568, 10910), (8210, 8728)]