18785455

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{107}}^1$

素因数の和:235

約数の個数: 32

約数和(自身を含む): 25510464

約数和(自身を除く): 6725009

約数列:

[1, 5, 13, 37, 65, 73, 107, 185, 365, 481, 535, 949, 1391, 2405, 2701, 3959, 4745, 6955, 7811, 13505, 19795, 35113, 39055, 51467, 101543, 175565, 257335, 289007, 507715, 1445035, 3757091, 18785455]

約数ペア:

[(1, 18785455), (5, 3757091), (13, 1445035), (37, 507715), (65, 289007), (73, 257335), (107, 175565), (185, 101543), (365, 51467), (481, 39055), (535, 35113), (949, 19795), (1391, 13505), (2405, 7811), (2701, 6955), (3959, 4745)]