21372485

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{8111}}^1$

素因数の和:8164

約数の個数: 16

約数和(自身を含む): 28035072

約数和(自身を除く): 6662587

約数列:

[1, 5, 17, 31, 85, 155, 527, 2635, 8111, 40555, 137887, 251441, 689435, 1257205, 4274497, 21372485]

約数ペア:

[(1, 21372485), (5, 4274497), (17, 1257205), (31, 689435), (85, 251441), (155, 137887), (527, 40555), (2635, 8111)]