21859175

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{653}}^1$

素因数の和:779

約数の個数: 24

約数和(自身を含む): 29518944

約数和(自身を除く): 7659769

約数列:

[1, 5, 13, 25, 65, 103, 325, 515, 653, 1339, 2575, 3265, 6695, 8489, 16325, 33475, 42445, 67259, 212225, 336295, 874367, 1681475, 4371835, 21859175]

約数ペア:

[(1, 21859175), (5, 4371835), (13, 1681475), (25, 874367), (65, 336295), (103, 212225), (325, 67259), (515, 42445), (653, 33475), (1339, 16325), (2575, 8489), (3265, 6695)]