18346840

素因数分解:

$2^3\times 5^1\times {\mathrm{523}}^1\times {\mathrm{877}}^1$

素因数の和:1411

約数の個数: 32

約数和(自身を含む): 41406480

約数和(自身を除く): 23059640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 523, 877, 1046, 1754, 2092, 2615, 3508, 4184, 4385, 5230, 7016, 8770, 10460, 17540, 20920, 35080, 458671, 917342, 1834684, 2293355, 3669368, 4586710, 9173420, 18346840]

約数ペア:

[(1, 18346840), (2, 9173420), (4, 4586710), (5, 3669368), (8, 2293355), (10, 1834684), (20, 917342), (40, 458671), (523, 35080), (877, 20920), (1046, 17540), (1754, 10460), (2092, 8770), (2615, 7016), (3508, 5230), (4184, 4385)]