289643080

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{101987}}^1$

素因数の和:102069

約数の個数: 32

約数和(自身を含む): 660882240

約数和(自身を除く): 371239160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 101987, 203974, 407948, 509935, 815896, 1019870, 2039740, 4079480, 7241077, 14482154, 28964308, 36205385, 57928616, 72410770, 144821540, 289643080]

約数ペア:

[(1, 289643080), (2, 144821540), (4, 72410770), (5, 57928616), (8, 36205385), (10, 28964308), (20, 14482154), (40, 7241077), (71, 4079480), (142, 2039740), (284, 1019870), (355, 815896), (568, 509935), (710, 407948), (1420, 203974), (2840, 101987)]