490010020

素因数分解:

$2^2\times 5^1\times {\mathrm{1523}}^1\times {\mathrm{16087}}^1$

素因数の和:17619

約数の個数: 24

約数和(自身を含む): 1029760704

約数和(自身を除く): 539750684

約数列:

[1, 2, 4, 5, 10, 20, 1523, 3046, 6092, 7615, 15230, 16087, 30460, 32174, 64348, 80435, 160870, 321740, 24500501, 49001002, 98002004, 122502505, 245005010, 490010020]

約数ペア:

[(1, 490010020), (2, 245005010), (4, 122502505), (5, 98002004), (10, 49001002), (20, 24500501), (1523, 321740), (3046, 160870), (6092, 80435), (7615, 64348), (15230, 32174), (16087, 30460)]