21538152

素因数分解:

$2^3\times 3^2\times {\mathrm{389}}^1\times {\mathrm{769}}^1$

素因数の和:1170

約数の個数: 48

約数和(自身を含む): 58558500

約数和(自身を除く): 37020348

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 389, 769, 778, 1167, 1538, 1556, 2307, 2334, 3076, 3112, 3501, 4614, 4668, 6152, 6921, 7002, 9228, 9336, 13842, 14004, 18456, 27684, 28008, 55368, 299141, 598282, 897423, 1196564, 1794846, 2393128, 2692269, 3589692, 5384538, 7179384, 10769076, 21538152]

約数ペア:

[(1, 21538152), (2, 10769076), (3, 7179384), (4, 5384538), (6, 3589692), (8, 2692269), (9, 2393128), (12, 1794846), (18, 1196564), (24, 897423), (36, 598282), (72, 299141), (389, 55368), (769, 28008), (778, 27684), (1167, 18456), (1538, 14004), (1556, 13842), (2307, 9336), (2334, 9228), (3076, 7002), (3112, 6921), (3501, 6152), (4614, 4668)]