20808285

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{613}}^1$

素因数の和:725

約数の個数: 32

約数和(自身を含む): 34894848

約数和(自身を除く): 14086563

約数列:

[1, 3, 5, 15, 31, 73, 93, 155, 219, 365, 465, 613, 1095, 1839, 2263, 3065, 6789, 9195, 11315, 19003, 33945, 44749, 57009, 95015, 134247, 223745, 285045, 671235, 1387219, 4161657, 6936095, 20808285]

約数ペア:

[(1, 20808285), (3, 6936095), (5, 4161657), (15, 1387219), (31, 671235), (73, 285045), (93, 223745), (155, 134247), (219, 95015), (365, 57009), (465, 44749), (613, 33945), (1095, 19003), (1839, 11315), (2263, 9195), (3065, 6789)]