21590860

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{103}}^1\times {\mathrm{223}}^1$

素因数の和:382

約数の個数: 48

約数和(自身を含む): 46964736

約数和(自身を除く): 25373876

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 103, 188, 206, 223, 235, 412, 446, 470, 515, 892, 940, 1030, 1115, 2060, 2230, 4460, 4841, 9682, 10481, 19364, 20962, 22969, 24205, 41924, 45938, 48410, 52405, 91876, 96820, 104810, 114845, 209620, 229690, 459380, 1079543, 2159086, 4318172, 5397715, 10795430, 21590860]

約数ペア:

[(1, 21590860), (2, 10795430), (4, 5397715), (5, 4318172), (10, 2159086), (20, 1079543), (47, 459380), (94, 229690), (103, 209620), (188, 114845), (206, 104810), (223, 96820), (235, 91876), (412, 52405), (446, 48410), (470, 45938), (515, 41924), (892, 24205), (940, 22969), (1030, 20962), (1115, 19364), (2060, 10481), (2230, 9682), (4460, 4841)]