18046780

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^2\times {\mathrm{179}}^1$

素因数の和:330

約数の個数: 36

約数和(自身を含む): 38654280

約数和(自身を除く): 20607500

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 179, 284, 355, 358, 710, 716, 895, 1420, 1790, 3580, 5041, 10082, 12709, 20164, 25205, 25418, 50410, 50836, 63545, 100820, 127090, 254180, 902339, 1804678, 3609356, 4511695, 9023390, 18046780]

約数ペア:

[(1, 18046780), (2, 9023390), (4, 4511695), (5, 3609356), (10, 1804678), (20, 902339), (71, 254180), (142, 127090), (179, 100820), (284, 63545), (355, 50836), (358, 50410), (710, 25418), (716, 25205), (895, 20164), (1420, 12709), (1790, 10082), (3580, 5041)]