128825020

素因数分解:

$2^2\times 5^1\times {\mathrm{1301}}^1\times {\mathrm{4951}}^1$

素因数の和:6261

約数の個数: 24

約数和(自身を含む): 270795168

約数和(自身を除く): 141970148

約数列:

[1, 2, 4, 5, 10, 20, 1301, 2602, 4951, 5204, 6505, 9902, 13010, 19804, 24755, 26020, 49510, 99020, 6441251, 12882502, 25765004, 32206255, 64412510, 128825020]

約数ペア:

[(1, 128825020), (2, 64412510), (4, 32206255), (5, 25765004), (10, 12882502), (20, 6441251), (1301, 99020), (2602, 49510), (4951, 26020), (5204, 24755), (6505, 19804), (9902, 13010)]