398590945

素因数分解:

$5^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1$

素因数の和:385

約数の個数: 32

約数和(自身を含む): 499000320

約数和(自身を除く): 100409375

約数列:

[1, 5, 79, 97, 101, 103, 395, 485, 505, 515, 7663, 7979, 8137, 9797, 9991, 10403, 38315, 39895, 40685, 48985, 49955, 52015, 773963, 789289, 821837, 1009091, 3869815, 3946445, 4109185, 5045455, 79718189, 398590945]

約数ペア:

[(1, 398590945), (5, 79718189), (79, 5045455), (97, 4109185), (101, 3946445), (103, 3869815), (395, 1009091), (485, 821837), (505, 789289), (515, 773963), (7663, 52015), (7979, 49955), (8137, 48985), (9797, 40685), (9991, 39895), (10403, 38315)]