20017256

素因数分解:

$2^3\times 7^1\times {\mathrm{149}}^1\times {\mathrm{2399}}^1$

素因数の和:2561

約数の個数: 32

約数和(自身を含む): 43200000

約数和(自身を除く): 23182744

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 149, 298, 596, 1043, 1192, 2086, 2399, 4172, 4798, 8344, 9596, 16793, 19192, 33586, 67172, 134344, 357451, 714902, 1429804, 2502157, 2859608, 5004314, 10008628, 20017256]

約数ペア:

[(1, 20017256), (2, 10008628), (4, 5004314), (7, 2859608), (8, 2502157), (14, 1429804), (28, 714902), (56, 357451), (149, 134344), (298, 67172), (596, 33586), (1043, 19192), (1192, 16793), (2086, 9596), (2399, 8344), (4172, 4798)]