646406568

素因数分解:

$2^3\times 3^4\times {\mathrm{997541}}^1$

素因数の和:997559

約数の個数: 40

約数和(自身を含む): 1810538730

約数和(自身を除く): 1164132162

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 162, 216, 324, 648, 997541, 1995082, 2992623, 3990164, 5985246, 7980328, 8977869, 11970492, 17955738, 23940984, 26933607, 35911476, 53867214, 71822952, 80800821, 107734428, 161601642, 215468856, 323203284, 646406568]

約数ペア:

[(1, 646406568), (2, 323203284), (3, 215468856), (4, 161601642), (6, 107734428), (8, 80800821), (9, 71822952), (12, 53867214), (18, 35911476), (24, 26933607), (27, 23940984), (36, 17955738), (54, 11970492), (72, 8977869), (81, 7980328), (108, 5985246), (162, 3990164), (216, 2992623), (324, 1995082), (648, 997541)]