21781175

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{2311}}^1$

素因数の和:2363

約数の個数: 24

約数和(自身を含む): 30102240

約数和(自身を除く): 8321065

約数列:

[1, 5, 13, 25, 29, 65, 145, 325, 377, 725, 1885, 2311, 9425, 11555, 30043, 57775, 67019, 150215, 335095, 751075, 871247, 1675475, 4356235, 21781175]

約数ペア:

[(1, 21781175), (5, 4356235), (13, 1675475), (25, 871247), (29, 751075), (65, 335095), (145, 150215), (325, 67019), (377, 57775), (725, 30043), (1885, 11555), (2311, 9425)]