19347080

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{251}}^1$

素因数の和:350

約数の個数: 64

約数和(自身を含む): 45722880

約数和(自身を除く): 26375800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 47, 82, 94, 164, 188, 205, 235, 251, 328, 376, 410, 470, 502, 820, 940, 1004, 1255, 1640, 1880, 1927, 2008, 2510, 3854, 5020, 7708, 9635, 10040, 10291, 11797, 15416, 19270, 20582, 23594, 38540, 41164, 47188, 51455, 58985, 77080, 82328, 94376, 102910, 117970, 205820, 235940, 411640, 471880, 483677, 967354, 1934708, 2418385, 3869416, 4836770, 9673540, 19347080]

約数ペア:

[(1, 19347080), (2, 9673540), (4, 4836770), (5, 3869416), (8, 2418385), (10, 1934708), (20, 967354), (40, 483677), (41, 471880), (47, 411640), (82, 235940), (94, 205820), (164, 117970), (188, 102910), (205, 94376), (235, 82328), (251, 77080), (328, 58985), (376, 51455), (410, 47188), (470, 41164), (502, 38540), (820, 23594), (940, 20582), (1004, 19270), (1255, 15416), (1640, 11797), (1880, 10291), (1927, 10040), (2008, 9635), (2510, 7708), (3854, 5020)]