21549805

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{3391}}^1$

素因数の和:3468

約数の個数: 16

約数和(自身を含む): 27353088

約数和(自身を除く): 5803283

約数列:

[1, 5, 31, 41, 155, 205, 1271, 3391, 6355, 16955, 105121, 139031, 525605, 695155, 4309961, 21549805]

約数ペア:

[(1, 21549805), (5, 4309961), (31, 695155), (41, 525605), (155, 139031), (205, 105121), (1271, 16955), (3391, 6355)]