21179355

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{1231}}^1$

素因数の和:1307

約数の個数: 32

約数和(自身を含む): 35954688

約数和(自身を除く): 14775333

約数列:

[1, 3, 5, 15, 31, 37, 93, 111, 155, 185, 465, 555, 1147, 1231, 3441, 3693, 5735, 6155, 17205, 18465, 38161, 45547, 114483, 136641, 190805, 227735, 572415, 683205, 1411957, 4235871, 7059785, 21179355]

約数ペア:

[(1, 21179355), (3, 7059785), (5, 4235871), (15, 1411957), (31, 683205), (37, 572415), (93, 227735), (111, 190805), (155, 136641), (185, 114483), (465, 45547), (555, 38161), (1147, 18465), (1231, 17205), (3441, 6155), (3693, 5735)]