21810765

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{743}}^1$

素因数の和:873

約数の個数: 32

約数和(自身を含む): 37140480

約数和(自身を除く): 15329715

約数列:

[1, 3, 5, 15, 19, 57, 95, 103, 285, 309, 515, 743, 1545, 1957, 2229, 3715, 5871, 9785, 11145, 14117, 29355, 42351, 70585, 76529, 211755, 229587, 382645, 1147935, 1454051, 4362153, 7270255, 21810765]

約数ペア:

[(1, 21810765), (3, 7270255), (5, 4362153), (15, 1454051), (19, 1147935), (57, 382645), (95, 229587), (103, 211755), (285, 76529), (309, 70585), (515, 42351), (743, 29355), (1545, 14117), (1957, 11145), (2229, 9785), (3715, 5871)]