28409775

素因数分解:

$3^1\times 5^2\times {\mathrm{73}}^1\times {\mathrm{5189}}^1$

素因数の和:5275

約数の個数: 24

約数和(自身を含む): 47623440

約数和(自身を除く): 19213665

約数列:

[1, 3, 5, 15, 25, 73, 75, 219, 365, 1095, 1825, 5189, 5475, 15567, 25945, 77835, 129725, 378797, 389175, 1136391, 1893985, 5681955, 9469925, 28409775]

約数ペア:

[(1, 28409775), (3, 9469925), (5, 5681955), (15, 1893985), (25, 1136391), (73, 389175), (75, 378797), (219, 129725), (365, 77835), (1095, 25945), (1825, 15567), (5189, 5475)]