21319964

素因数分解:

$2^2\times {\mathrm{107}}^1\times {\mathrm{109}}^1\times {\mathrm{457}}^1$

素因数の和:677

約数の個数: 24

約数和(自身を含む): 38087280

約数和(自身を除く): 16767316

約数列:

[1, 2, 4, 107, 109, 214, 218, 428, 436, 457, 914, 1828, 11663, 23326, 46652, 48899, 49813, 97798, 99626, 195596, 199252, 5329991, 10659982, 21319964]

約数ペア:

[(1, 21319964), (2, 10659982), (4, 5329991), (107, 199252), (109, 195596), (214, 99626), (218, 97798), (428, 49813), (436, 48899), (457, 46652), (914, 23326), (1828, 11663)]