18316420

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{6991}}^1$

素因数の和:7131

約数の個数: 24

約数和(自身を含む): 38763648

約数和(自身を除く): 20447228

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 6991, 13982, 27964, 34955, 69910, 139820, 915821, 1831642, 3663284, 4579105, 9158210, 18316420]

約数ペア:

[(1, 18316420), (2, 9158210), (4, 4579105), (5, 3663284), (10, 1831642), (20, 915821), (131, 139820), (262, 69910), (524, 34955), (655, 27964), (1310, 13982), (2620, 6991)]