15991749

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{10391}}^1$

素因数の和:10422

約数の個数: 20

約数和(自身を含む): 25148640

約数和(自身を除く): 9156891

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 10391, 31173, 93519, 197429, 280557, 592287, 841671, 1776861, 5330583, 15991749]

約数ペア:

[(1, 15991749), (3, 5330583), (9, 1776861), (19, 841671), (27, 592287), (57, 280557), (81, 197429), (171, 93519), (513, 31173), (1539, 10391)]