18100820

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{10169}}^1$

素因数の和:10267

約数の個数: 24

約数和(自身を含む): 38442600

約数和(自身を除く): 20341780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 10169, 20338, 40676, 50845, 101690, 203380, 905041, 1810082, 3620164, 4525205, 9050410, 18100820]

約数ペア:

[(1, 18100820), (2, 9050410), (4, 4525205), (5, 3620164), (10, 1810082), (20, 905041), (89, 203380), (178, 101690), (356, 50845), (445, 40676), (890, 20338), (1780, 10169)]