21536625

素因数分解:

$3^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{227}}^1$

素因数の和:279

約数の個数: 64

約数和(自身を含む): 40974336

約数和(自身を除く): 19437711

約数列:

[1, 3, 5, 11, 15, 23, 25, 33, 55, 69, 75, 115, 125, 165, 227, 253, 275, 345, 375, 575, 681, 759, 825, 1135, 1265, 1375, 1725, 2497, 2875, 3405, 3795, 4125, 5221, 5675, 6325, 7491, 8625, 12485, 15663, 17025, 18975, 26105, 28375, 31625, 37455, 57431, 62425, 78315, 85125, 94875, 130525, 172293, 187275, 287155, 312125, 391575, 652625, 861465, 936375, 1435775, 1957875, 4307325, 7178875, 21536625]

約数ペア:

[(1, 21536625), (3, 7178875), (5, 4307325), (11, 1957875), (15, 1435775), (23, 936375), (25, 861465), (33, 652625), (55, 391575), (69, 312125), (75, 287155), (115, 187275), (125, 172293), (165, 130525), (227, 94875), (253, 85125), (275, 78315), (345, 62425), (375, 57431), (575, 37455), (681, 31625), (759, 28375), (825, 26105), (1135, 18975), (1265, 17025), (1375, 15663), (1725, 12485), (2497, 8625), (2875, 7491), (3405, 6325), (3795, 5675), (4125, 5221)]