13900025

素因数分解:

$5^2\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{191}}^1$

素因数の和:313

約数の個数: 24

約数和(自身を含む): 17998848

約数和(自身を除く): 4098823

約数列:

[1, 5, 25, 41, 71, 191, 205, 355, 955, 1025, 1775, 2911, 4775, 7831, 13561, 14555, 39155, 67805, 72775, 195775, 339025, 556001, 2780005, 13900025]

約数ペア:

[(1, 13900025), (5, 2780005), (25, 556001), (41, 339025), (71, 195775), (191, 72775), (205, 67805), (355, 39155), (955, 14555), (1025, 13561), (1775, 7831), (2911, 4775)]