20984025

素因数分解:

$3^1\times 5^2\times {\mathrm{53}}^1\times {\mathrm{5279}}^1$

素因数の和:5345

約数の個数: 24

約数和(自身を含む): 35354880

約数和(自身を除く): 14370855

約数列:

[1, 3, 5, 15, 25, 53, 75, 159, 265, 795, 1325, 3975, 5279, 15837, 26395, 79185, 131975, 279787, 395925, 839361, 1398935, 4196805, 6994675, 20984025]

約数ペア:

[(1, 20984025), (3, 6994675), (5, 4196805), (15, 1398935), (25, 839361), (53, 395925), (75, 279787), (159, 131975), (265, 79185), (795, 26395), (1325, 15837), (3975, 5279)]