219838010

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{71}}^2\times {\mathrm{89}}^1$

素因数の和:252

約数の個数: 72

約数和(自身を含む): 472134420

約数和(自身を除く): 252296410

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 71, 89, 98, 142, 178, 245, 355, 445, 490, 497, 623, 710, 890, 994, 1246, 2485, 3115, 3479, 4361, 4970, 5041, 6230, 6319, 6958, 8722, 10082, 12638, 17395, 21805, 25205, 31595, 34790, 35287, 43610, 44233, 50410, 63190, 70574, 88466, 176435, 221165, 247009, 309631, 352870, 442330, 448649, 494018, 619262, 897298, 1235045, 1548155, 2243245, 2470090, 3096310, 3140543, 4486490, 6281086, 15702715, 21983801, 31405430, 43967602, 109919005, 219838010]

約数ペア:

[(1, 219838010), (2, 109919005), (5, 43967602), (7, 31405430), (10, 21983801), (14, 15702715), (35, 6281086), (49, 4486490), (70, 3140543), (71, 3096310), (89, 2470090), (98, 2243245), (142, 1548155), (178, 1235045), (245, 897298), (355, 619262), (445, 494018), (490, 448649), (497, 442330), (623, 352870), (710, 309631), (890, 247009), (994, 221165), (1246, 176435), (2485, 88466), (3115, 70574), (3479, 63190), (4361, 50410), (4970, 44233), (5041, 43610), (6230, 35287), (6319, 34790), (6958, 31595), (8722, 25205), (10082, 21805), (12638, 17395)]