20884825

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{359}}^1$

素因数の和:561

約数の個数: 24

約数和(自身を含む): 28123200

約数和(自身を除く): 7238375

約数列:

[1, 5, 13, 25, 65, 179, 325, 359, 895, 1795, 2327, 4475, 4667, 8975, 11635, 23335, 58175, 64261, 116675, 321305, 835393, 1606525, 4176965, 20884825]

約数ペア:

[(1, 20884825), (5, 4176965), (13, 1606525), (25, 835393), (65, 321305), (179, 116675), (325, 64261), (359, 58175), (895, 23335), (1795, 11635), (2327, 8975), (4475, 4667)]