4940180

素因数分解:

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

素因数の和:165

約数の個数: 54

約数和(自身を含む): 12240522

約数和(自身を除く): 7300342

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 71, 98, 140, 142, 196, 245, 284, 355, 490, 497, 710, 980, 994, 1420, 1988, 2485, 3479, 4970, 5041, 6958, 9940, 10082, 13916, 17395, 20164, 25205, 34790, 35287, 50410, 69580, 70574, 100820, 141148, 176435, 247009, 352870, 494018, 705740, 988036, 1235045, 2470090, 4940180]

約数ペア:

[(1, 4940180), (2, 2470090), (4, 1235045), (5, 988036), (7, 705740), (10, 494018), (14, 352870), (20, 247009), (28, 176435), (35, 141148), (49, 100820), (70, 70574), (71, 69580), (98, 50410), (140, 35287), (142, 34790), (196, 25205), (245, 20164), (284, 17395), (355, 13916), (490, 10082), (497, 9940), (710, 6958), (980, 5041), (994, 4970), (1420, 3479), (1988, 2485)]