20905620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{15149}}^1$

素因数の和:15184

約数の個数: 48

約数和(自身を含む): 61084800

約数和(自身を除く): 40179180

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 60, 69, 92, 115, 138, 230, 276, 345, 460, 690, 1380, 15149, 30298, 45447, 60596, 75745, 90894, 151490, 181788, 227235, 302980, 348427, 454470, 696854, 908940, 1045281, 1393708, 1742135, 2090562, 3484270, 4181124, 5226405, 6968540, 10452810, 20905620]

約数ペア:

[(1, 20905620), (2, 10452810), (3, 6968540), (4, 5226405), (5, 4181124), (6, 3484270), (10, 2090562), (12, 1742135), (15, 1393708), (20, 1045281), (23, 908940), (30, 696854), (46, 454470), (60, 348427), (69, 302980), (92, 227235), (115, 181788), (138, 151490), (230, 90894), (276, 75745), (345, 60596), (460, 45447), (690, 30298), (1380, 15149)]