21318647

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{1259}}^1$

素因数の和:1366

約数の個数: 16

約数和(自身を含む): 25401600

約数和(自身を除く): 4082953

約数列:

[1, 7, 41, 59, 287, 413, 1259, 2419, 8813, 16933, 51619, 74281, 361333, 519967, 3045521, 21318647]

約数ペア:

[(1, 21318647), (7, 3045521), (41, 519967), (59, 361333), (287, 74281), (413, 51619), (1259, 16933), (2419, 8813)]