21816695

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{127}}^1$

素因数の和:239

約数の個数: 32

約数和(自身を含む): 29196288

約数和(自身を除く): 7379593

約数列:

[1, 5, 17, 43, 47, 85, 127, 215, 235, 635, 731, 799, 2021, 2159, 3655, 3995, 5461, 5969, 10105, 10795, 27305, 29845, 34357, 92837, 101473, 171785, 256667, 464185, 507365, 1283335, 4363339, 21816695]

約数ペア:

[(1, 21816695), (5, 4363339), (17, 1283335), (43, 507365), (47, 464185), (85, 256667), (127, 171785), (215, 101473), (235, 92837), (635, 34357), (731, 29845), (799, 27305), (2021, 10795), (2159, 10105), (3655, 5969), (3995, 5461)]