18491320

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{4091}}^1$

素因数の和:4215

約数の個数: 32

約数和(自身を含む): 41983920

約数和(自身を除く): 23492600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 2260, 4091, 4520, 8182, 16364, 20455, 32728, 40910, 81820, 163640, 462283, 924566, 1849132, 2311415, 3698264, 4622830, 9245660, 18491320]

約数ペア:

[(1, 18491320), (2, 9245660), (4, 4622830), (5, 3698264), (8, 2311415), (10, 1849132), (20, 924566), (40, 462283), (113, 163640), (226, 81820), (452, 40910), (565, 32728), (904, 20455), (1130, 16364), (2260, 8182), (4091, 4520)]