21767535

素因数分解:

$3^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{757}}^1$

素因数の和:845

約数の個数: 40

約数和(自身を含む): 39622176

約数和(自身を除く): 17854641

約数列:

[1, 3, 5, 9, 15, 27, 45, 71, 81, 135, 213, 355, 405, 639, 757, 1065, 1917, 2271, 3195, 3785, 5751, 6813, 9585, 11355, 20439, 28755, 34065, 53747, 61317, 102195, 161241, 268735, 306585, 483723, 806205, 1451169, 2418615, 4353507, 7255845, 21767535]

約数ペア:

[(1, 21767535), (3, 7255845), (5, 4353507), (9, 2418615), (15, 1451169), (27, 806205), (45, 483723), (71, 306585), (81, 268735), (135, 161241), (213, 102195), (355, 61317), (405, 53747), (639, 34065), (757, 28755), (1065, 20439), (1917, 11355), (2271, 9585), (3195, 6813), (3785, 5751)]