20578856

素因数分解:

$2^3\times {\mathrm{47}}^1\times {\mathrm{229}}^1\times {\mathrm{239}}^1$

素因数の和:521

約数の個数: 32

約数和(自身を含む): 39744000

約数和(自身を除く): 19165144

約数列:

[1, 2, 4, 8, 47, 94, 188, 229, 239, 376, 458, 478, 916, 956, 1832, 1912, 10763, 11233, 21526, 22466, 43052, 44932, 54731, 86104, 89864, 109462, 218924, 437848, 2572357, 5144714, 10289428, 20578856]

約数ペア:

[(1, 20578856), (2, 10289428), (4, 5144714), (8, 2572357), (47, 437848), (94, 218924), (188, 109462), (229, 89864), (239, 86104), (376, 54731), (458, 44932), (478, 43052), (916, 22466), (956, 21526), (1832, 11233), (1912, 10763)]