18397640

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{3511}}^1$

素因数の和:3653

約数の個数: 32

約数和(自身を含む): 41722560

約数和(自身を除く): 23324920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 3511, 5240, 7022, 14044, 17555, 28088, 35110, 70220, 140440, 459941, 919882, 1839764, 2299705, 3679528, 4599410, 9198820, 18397640]

約数ペア:

[(1, 18397640), (2, 9198820), (4, 4599410), (5, 3679528), (8, 2299705), (10, 1839764), (20, 919882), (40, 459941), (131, 140440), (262, 70220), (524, 35110), (655, 28088), (1048, 17555), (1310, 14044), (2620, 7022), (3511, 5240)]