16991245

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{113}}^1$

素因数の和:225

約数の個数: 32

約数和(自身を含む): 22900320

約数和(自身を除く): 5909075

約数列:

[1, 5, 17, 29, 61, 85, 113, 145, 305, 493, 565, 1037, 1769, 1921, 2465, 3277, 5185, 6893, 8845, 9605, 16385, 30073, 34465, 55709, 117181, 150365, 199897, 278545, 585905, 999485, 3398249, 16991245]

約数ペア:

[(1, 16991245), (5, 3398249), (17, 999485), (29, 585905), (61, 278545), (85, 199897), (113, 150365), (145, 117181), (305, 55709), (493, 34465), (565, 30073), (1037, 16385), (1769, 9605), (1921, 8845), (2465, 6893), (3277, 5185)]