18747980

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{5179}}^1$

素因数の和:5369

約数の個数: 24

約数和(自身を含む): 39595920

約数和(自身を除く): 20847940

約数列:

[1, 2, 4, 5, 10, 20, 181, 362, 724, 905, 1810, 3620, 5179, 10358, 20716, 25895, 51790, 103580, 937399, 1874798, 3749596, 4686995, 9373990, 18747980]

約数ペア:

[(1, 18747980), (2, 9373990), (4, 4686995), (5, 3749596), (10, 1874798), (20, 937399), (181, 103580), (362, 51790), (724, 25895), (905, 20716), (1810, 10358), (3620, 5179)]