12400280

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{2441}}^1$

素因数の和:2579

約数の個数: 32

約数和(自身を含む): 28131840

約数和(自身を除く): 15731560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 254, 508, 635, 1016, 1270, 2441, 2540, 4882, 5080, 9764, 12205, 19528, 24410, 48820, 97640, 310007, 620014, 1240028, 1550035, 2480056, 3100070, 6200140, 12400280]

約数ペア:

[(1, 12400280), (2, 6200140), (4, 3100070), (5, 2480056), (8, 1550035), (10, 1240028), (20, 620014), (40, 310007), (127, 97640), (254, 48820), (508, 24410), (635, 19528), (1016, 12205), (1270, 9764), (2441, 5080), (2540, 4882)]