18894940

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{20101}}^1$

素因数の和:20157

約数の個数: 24

約数和(自身を含む): 40525632

約数和(自身を除く): 21630692

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 20101, 40202, 80404, 100505, 201010, 402020, 944747, 1889494, 3778988, 4723735, 9447470, 18894940]

約数ペア:

[(1, 18894940), (2, 9447470), (4, 4723735), (5, 3778988), (10, 1889494), (20, 944747), (47, 402020), (94, 201010), (188, 100505), (235, 80404), (470, 40202), (940, 20101)]