20139920

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{8681}}^1$

素因数の和:8723

約数の個数: 40

約数和(自身を含む): 48445560

約数和(自身を除く): 28305640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 1160, 2320, 8681, 17362, 34724, 43405, 69448, 86810, 138896, 173620, 251749, 347240, 503498, 694480, 1006996, 1258745, 2013992, 2517490, 4027984, 5034980, 10069960, 20139920]

約数ペア:

[(1, 20139920), (2, 10069960), (4, 5034980), (5, 4027984), (8, 2517490), (10, 2013992), (16, 1258745), (20, 1006996), (29, 694480), (40, 503498), (58, 347240), (80, 251749), (116, 173620), (145, 138896), (232, 86810), (290, 69448), (464, 43405), (580, 34724), (1160, 17362), (2320, 8681)]