18686420

素因数分解:

$2^2\times 5^1\times {\mathrm{277}}^1\times {\mathrm{3373}}^1$

素因数の和:3659

約数の個数: 24

約数和(自身を含む): 39394824

約数和(自身を除く): 20708404

約数列:

[1, 2, 4, 5, 10, 20, 277, 554, 1108, 1385, 2770, 3373, 5540, 6746, 13492, 16865, 33730, 67460, 934321, 1868642, 3737284, 4671605, 9343210, 18686420]

約数ペア:

[(1, 18686420), (2, 9343210), (4, 4671605), (5, 3737284), (10, 1868642), (20, 934321), (277, 67460), (554, 33730), (1108, 16865), (1385, 13492), (2770, 6746), (3373, 5540)]