21419590

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{457}}^1$

素因数の和:616

約数の個数: 32

約数和(自身を含む): 39900960

約数和(自身を除く): 18481370

約数列:

[1, 2, 5, 10, 43, 86, 109, 215, 218, 430, 457, 545, 914, 1090, 2285, 4570, 4687, 9374, 19651, 23435, 39302, 46870, 49813, 98255, 99626, 196510, 249065, 498130, 2141959, 4283918, 10709795, 21419590]

約数ペア:

[(1, 21419590), (2, 10709795), (5, 4283918), (10, 2141959), (43, 498130), (86, 249065), (109, 196510), (215, 99626), (218, 98255), (430, 49813), (457, 46870), (545, 39302), (914, 23435), (1090, 19651), (2285, 9374), (4570, 4687)]