21045840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{87691}}^1$

素因数の和:87707

約数の個数: 40

約数和(自身を含む): 65242848

約数和(自身を除く): 44197008

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 87691, 175382, 263073, 350764, 438455, 526146, 701528, 876910, 1052292, 1315365, 1403056, 1753820, 2104584, 2630730, 3507640, 4209168, 5261460, 7015280, 10522920, 21045840]

約数ペア:

[(1, 21045840), (2, 10522920), (3, 7015280), (4, 5261460), (5, 4209168), (6, 3507640), (8, 2630730), (10, 2104584), (12, 1753820), (15, 1403056), (16, 1315365), (20, 1052292), (24, 876910), (30, 701528), (40, 526146), (48, 438455), (60, 350764), (80, 263073), (120, 175382), (240, 87691)]