19181020

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{7321}}^1$

素因数の和:7461

約数の個数: 24

約数和(自身を含む): 40593168

約数和(自身を除く): 21412148

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 7321, 14642, 29284, 36605, 73210, 146420, 959051, 1918102, 3836204, 4795255, 9590510, 19181020]

約数ペア:

[(1, 19181020), (2, 9590510), (4, 4795255), (5, 3836204), (10, 1918102), (20, 959051), (131, 146420), (262, 73210), (524, 36605), (655, 29284), (1310, 14642), (2620, 7321)]