21142388

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{137}}^1\times {\mathrm{941}}^1$

素因数の和:1123

約数の個数: 24

約数和(自身を含む): 38218824

約数和(自身を除く): 17076436

約数列:

[1, 2, 4, 41, 82, 137, 164, 274, 548, 941, 1882, 3764, 5617, 11234, 22468, 38581, 77162, 128917, 154324, 257834, 515668, 5285597, 10571194, 21142388]

約数ペア:

[(1, 21142388), (2, 10571194), (4, 5285597), (41, 515668), (82, 257834), (137, 154324), (164, 128917), (274, 77162), (548, 38581), (941, 22468), (1882, 11234), (3764, 5617)]