21156378

素因数分解:

$2^1\times 3^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1\times {\mathrm{607}}^1$

素因数の和:806

約数の個数: 32

約数和(自身を含む): 43805184

約数和(自身を除く): 22648806

約数列:

[1, 2, 3, 6, 37, 74, 111, 157, 222, 314, 471, 607, 942, 1214, 1821, 3642, 5809, 11618, 17427, 22459, 34854, 44918, 67377, 95299, 134754, 190598, 285897, 571794, 3526063, 7052126, 10578189, 21156378]

約数ペア:

[(1, 21156378), (2, 10578189), (3, 7052126), (6, 3526063), (37, 571794), (74, 285897), (111, 190598), (157, 134754), (222, 95299), (314, 67377), (471, 44918), (607, 34854), (942, 22459), (1214, 17427), (1821, 11618), (3642, 5809)]