28541980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{661}}^1$

素因数の和:814

約数の個数: 48

約数和(自身を含む): 64060416

約数和(自身を除く): 35518436

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 127, 170, 254, 340, 508, 635, 661, 1270, 1322, 2159, 2540, 2644, 3305, 4318, 6610, 8636, 10795, 11237, 13220, 21590, 22474, 43180, 44948, 56185, 83947, 112370, 167894, 224740, 335788, 419735, 839470, 1427099, 1678940, 2854198, 5708396, 7135495, 14270990, 28541980]

約数ペア:

[(1, 28541980), (2, 14270990), (4, 7135495), (5, 5708396), (10, 2854198), (17, 1678940), (20, 1427099), (34, 839470), (68, 419735), (85, 335788), (127, 224740), (170, 167894), (254, 112370), (340, 83947), (508, 56185), (635, 44948), (661, 43180), (1270, 22474), (1322, 21590), (2159, 13220), (2540, 11237), (2644, 10795), (3305, 8636), (4318, 6610)]