20402272

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{389}}^1$

素因数の和:559

約数の個数: 48

約数和(自身を含む): 44226000

約数和(自身を除く): 23823728

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 149, 176, 298, 352, 389, 596, 778, 1192, 1556, 1639, 2384, 3112, 3278, 4279, 4768, 6224, 6556, 8558, 12448, 13112, 17116, 26224, 34232, 52448, 57961, 68464, 115922, 136928, 231844, 463688, 637571, 927376, 1275142, 1854752, 2550284, 5100568, 10201136, 20402272]

約数ペア:

[(1, 20402272), (2, 10201136), (4, 5100568), (8, 2550284), (11, 1854752), (16, 1275142), (22, 927376), (32, 637571), (44, 463688), (88, 231844), (149, 136928), (176, 115922), (298, 68464), (352, 57961), (389, 52448), (596, 34232), (778, 26224), (1192, 17116), (1556, 13112), (1639, 12448), (2384, 8558), (3112, 6556), (3278, 6224), (4279, 4768)]