20939725

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{659}}^1$

素因数の和:741

約数の個数: 24

約数和(自身を含む): 27498240

約数和(自身を除く): 6558515

約数列:

[1, 5, 25, 31, 41, 155, 205, 659, 775, 1025, 1271, 3295, 6355, 16475, 20429, 27019, 31775, 102145, 135095, 510725, 675475, 837589, 4187945, 20939725]

約数ペア:

[(1, 20939725), (5, 4187945), (25, 837589), (31, 675475), (41, 510725), (155, 135095), (205, 102145), (659, 31775), (775, 27019), (1025, 20429), (1271, 16475), (3295, 6355)]