81434180

素因数分解:

$2^2\times 5^1\times {\mathrm{1193}}^1\times {\mathrm{3413}}^1$

素因数の和:4615

約数の個数: 24

約数和(自身を含む): 171205272

約数和(自身を除く): 89771092

約数列:

[1, 2, 4, 5, 10, 20, 1193, 2386, 3413, 4772, 5965, 6826, 11930, 13652, 17065, 23860, 34130, 68260, 4071709, 8143418, 16286836, 20358545, 40717090, 81434180]

約数ペア:

[(1, 81434180), (2, 40717090), (4, 20358545), (5, 16286836), (10, 8143418), (20, 4071709), (1193, 68260), (2386, 34130), (3413, 23860), (4772, 17065), (5965, 13652), (6826, 11930)]