405050120

素因数分解:

$2^3\times 5^1\times {\mathrm{809}}^1\times {\mathrm{12517}}^1$

素因数の和:13337

約数の個数: 32

約数和(自身を含む): 912562200

約数和(自身を除く): 507512080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 809, 1618, 3236, 4045, 6472, 8090, 12517, 16180, 25034, 32360, 50068, 62585, 100136, 125170, 250340, 500680, 10126253, 20252506, 40505012, 50631265, 81010024, 101262530, 202525060, 405050120]

約数ペア:

[(1, 405050120), (2, 202525060), (4, 101262530), (5, 81010024), (8, 50631265), (10, 40505012), (20, 20252506), (40, 10126253), (809, 500680), (1618, 250340), (3236, 125170), (4045, 100136), (6472, 62585), (8090, 50068), (12517, 32360), (16180, 25034)]