21396808

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{1129}}^1$

素因数の和:1261

約数の個数: 32

約数和(自身を含む): 42307200

約数和(自身を除く): 20910392

約数列:

[1, 2, 4, 8, 23, 46, 92, 103, 184, 206, 412, 824, 1129, 2258, 2369, 4516, 4738, 9032, 9476, 18952, 25967, 51934, 103868, 116287, 207736, 232574, 465148, 930296, 2674601, 5349202, 10698404, 21396808]

約数ペア:

[(1, 21396808), (2, 10698404), (4, 5349202), (8, 2674601), (23, 930296), (46, 465148), (92, 232574), (103, 207736), (184, 116287), (206, 103868), (412, 51934), (824, 25967), (1129, 18952), (2258, 9476), (2369, 9032), (4516, 4738)]