21152845

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{487}}^1$

素因数の和:589

約数の個数: 32

約数和(自身を含む): 31200768

約数和(自身を除く): 10047923

約数列:

[1, 5, 7, 17, 35, 73, 85, 119, 365, 487, 511, 595, 1241, 2435, 2555, 3409, 6205, 8279, 8687, 17045, 35551, 41395, 43435, 57953, 177755, 248857, 289765, 604367, 1244285, 3021835, 4230569, 21152845]

約数ペア:

[(1, 21152845), (5, 4230569), (7, 3021835), (17, 1244285), (35, 604367), (73, 289765), (85, 248857), (119, 177755), (365, 57953), (487, 43435), (511, 41395), (595, 35551), (1241, 17045), (2435, 8687), (2555, 8279), (3409, 6205)]