18071660

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{2503}}^1$

素因数の和:2550

約数の個数: 36

約数和(自身を含む): 40069008

約数和(自身を除く): 21997348

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1444, 1805, 2503, 3610, 5006, 7220, 10012, 12515, 25030, 47557, 50060, 95114, 190228, 237785, 475570, 903583, 951140, 1807166, 3614332, 4517915, 9035830, 18071660]

約数ペア:

[(1, 18071660), (2, 9035830), (4, 4517915), (5, 3614332), (10, 1807166), (19, 951140), (20, 903583), (38, 475570), (76, 237785), (95, 190228), (190, 95114), (361, 50060), (380, 47557), (722, 25030), (1444, 12515), (1805, 10012), (2503, 7220), (3610, 5006)]