21820925

素因数分解:

$5^2\times 7^2\times {\mathrm{47}}^1\times {\mathrm{379}}^1$

素因数の和:450

約数の個数: 36

約数和(自身を含む): 32230080

約数和(自身を除く): 10409155

約数列:

[1, 5, 7, 25, 35, 47, 49, 175, 235, 245, 329, 379, 1175, 1225, 1645, 1895, 2303, 2653, 8225, 9475, 11515, 13265, 17813, 18571, 57575, 66325, 89065, 92855, 124691, 445325, 464275, 623455, 872837, 3117275, 4364185, 21820925]

約数ペア:

[(1, 21820925), (5, 4364185), (7, 3117275), (25, 872837), (35, 623455), (47, 464275), (49, 445325), (175, 124691), (235, 92855), (245, 89065), (329, 66325), (379, 57575), (1175, 18571), (1225, 17813), (1645, 13265), (1895, 11515), (2303, 9475), (2653, 8225)]