21995265

素因数分解:

$3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1\times {\mathrm{379}}^1$

素因数の和:513

約数の個数: 32

約数和(自身を含む): 36443520

約数和(自身を除く): 14448255

約数列:

[1, 3, 5, 15, 53, 73, 159, 219, 265, 365, 379, 795, 1095, 1137, 1895, 3869, 5685, 11607, 19345, 20087, 27667, 58035, 60261, 83001, 100435, 138335, 301305, 415005, 1466351, 4399053, 7331755, 21995265]

約数ペア:

[(1, 21995265), (3, 7331755), (5, 4399053), (15, 1466351), (53, 415005), (73, 301305), (159, 138335), (219, 100435), (265, 83001), (365, 60261), (379, 58035), (795, 27667), (1095, 20087), (1137, 19345), (1895, 11607), (3869, 5685)]