21647704

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{1277}}^1$

素因数の和:1459

約数の個数: 32

約数和(自身を含む): 44014320

約数和(自身を除く): 22366616

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 163, 326, 652, 1277, 1304, 2119, 2554, 4238, 5108, 8476, 10216, 16601, 16952, 33202, 66404, 132808, 208151, 416302, 832604, 1665208, 2705963, 5411926, 10823852, 21647704]

約数ペア:

[(1, 21647704), (2, 10823852), (4, 5411926), (8, 2705963), (13, 1665208), (26, 832604), (52, 416302), (104, 208151), (163, 132808), (326, 66404), (652, 33202), (1277, 16952), (1304, 16601), (2119, 10216), (2554, 8476), (4238, 5108)]