18656420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{30091}}^1$

素因数の和:30131

約数の個数: 24

約数和(自身を含む): 40443648

約数和(自身を除く): 21787228

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 30091, 60182, 120364, 150455, 300910, 601820, 932821, 1865642, 3731284, 4664105, 9328210, 18656420]

約数ペア:

[(1, 18656420), (2, 9328210), (4, 4664105), (5, 3731284), (10, 1865642), (20, 932821), (31, 601820), (62, 300910), (124, 150455), (155, 120364), (310, 60182), (620, 30091)]