19996988

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{7703}}^1$

素因数の和:7777

約数の個数: 24

約数和(自身を含む): 38828160

約数和(自身を除く): 18831172

約数列:

[1, 2, 4, 11, 22, 44, 59, 118, 236, 649, 1298, 2596, 7703, 15406, 30812, 84733, 169466, 338932, 454477, 908954, 1817908, 4999247, 9998494, 19996988]

約数ペア:

[(1, 19996988), (2, 9998494), (4, 4999247), (11, 1817908), (22, 908954), (44, 454477), (59, 338932), (118, 169466), (236, 84733), (649, 30812), (1298, 15406), (2596, 7703)]