18614780

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{13109}}^1$

素因数の和:13189

約数の個数: 24

約数和(自身を含む): 39644640

約数和(自身を除く): 21029860

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 13109, 26218, 52436, 65545, 131090, 262180, 930739, 1861478, 3722956, 4653695, 9307390, 18614780]

約数ペア:

[(1, 18614780), (2, 9307390), (4, 4653695), (5, 3722956), (10, 1861478), (20, 930739), (71, 262180), (142, 131090), (284, 65545), (355, 52436), (710, 26218), (1420, 13109)]