12928251

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{139}}^1$

素因数の和:295

約数の個数: 32

約数和(自身を含む): 20500480

約数和(自身を除く): 7572229

約数列:

[1, 3, 7, 21, 43, 103, 129, 139, 301, 309, 417, 721, 903, 973, 2163, 2919, 4429, 5977, 13287, 14317, 17931, 31003, 41839, 42951, 93009, 100219, 125517, 300657, 615631, 1846893, 4309417, 12928251]

約数ペア:

[(1, 12928251), (3, 4309417), (7, 1846893), (21, 615631), (43, 300657), (103, 125517), (129, 100219), (139, 93009), (301, 42951), (309, 41839), (417, 31003), (721, 17931), (903, 14317), (973, 13287), (2163, 5977), (2919, 4429)]