20405935

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{563}}^1\times {\mathrm{659}}^1$

素因数の和:1238

約数の個数: 16

約数和(自身を含む): 26801280

約数和(自身を除く): 6395345

約数列:

[1, 5, 11, 55, 563, 659, 2815, 3295, 6193, 7249, 30965, 36245, 371017, 1855085, 4081187, 20405935]

約数ペア:

[(1, 20405935), (5, 4081187), (11, 1855085), (55, 371017), (563, 36245), (659, 30965), (2815, 7249), (3295, 6193)]