21289652

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{113}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 41240640

約数和(自身を除く): 19950988

約数列:

[1, 2, 4, 19, 37, 38, 67, 74, 76, 113, 134, 148, 226, 268, 452, 703, 1273, 1406, 2147, 2479, 2546, 2812, 4181, 4294, 4958, 5092, 7571, 8362, 8588, 9916, 15142, 16724, 30284, 47101, 79439, 94202, 143849, 158878, 188404, 280127, 287698, 317756, 560254, 575396, 1120508, 5322413, 10644826, 21289652]

約数ペア:

[(1, 21289652), (2, 10644826), (4, 5322413), (19, 1120508), (37, 575396), (38, 560254), (67, 317756), (74, 287698), (76, 280127), (113, 188404), (134, 158878), (148, 143849), (226, 94202), (268, 79439), (452, 47101), (703, 30284), (1273, 16724), (1406, 15142), (2147, 9916), (2479, 8588), (2546, 8362), (2812, 7571), (4181, 5092), (4294, 4958)]