20393960

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{17581}}^1$

素因数の和:17621

約数の個数: 32

約数和(自身を含む): 47471400

約数和(自身を除く): 27077440

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 17581, 35162, 70324, 87905, 140648, 175810, 351620, 509849, 703240, 1019698, 2039396, 2549245, 4078792, 5098490, 10196980, 20393960]

約数ペア:

[(1, 20393960), (2, 10196980), (4, 5098490), (5, 4078792), (8, 2549245), (10, 2039396), (20, 1019698), (29, 703240), (40, 509849), (58, 351620), (116, 175810), (145, 140648), (232, 87905), (290, 70324), (580, 35162), (1160, 17581)]