20805730

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{2591}}^1$

素因数の和:2682

約数の個数: 32

約数和(自身を含む): 41430528

約数和(自身を除く): 20624798

約数列:

[1, 2, 5, 10, 11, 22, 55, 73, 110, 146, 365, 730, 803, 1606, 2591, 4015, 5182, 8030, 12955, 25910, 28501, 57002, 142505, 189143, 285010, 378286, 945715, 1891430, 2080573, 4161146, 10402865, 20805730]

約数ペア:

[(1, 20805730), (2, 10402865), (5, 4161146), (10, 2080573), (11, 1891430), (22, 945715), (55, 378286), (73, 285010), (110, 189143), (146, 142505), (365, 57002), (730, 28501), (803, 25910), (1606, 12955), (2591, 8030), (4015, 5182)]