21037595

素因数分解:

$5^1\times {\mathrm{83}}^1\times {\mathrm{163}}^1\times {\mathrm{311}}^1$

素因数の和:562

約数の個数: 16

約数和(自身を含む): 25788672

約数和(自身を除く): 4751077

約数列:

[1, 5, 83, 163, 311, 415, 815, 1555, 13529, 25813, 50693, 67645, 129065, 253465, 4207519, 21037595]

約数ペア:

[(1, 21037595), (5, 4207519), (83, 253465), (163, 129065), (311, 67645), (415, 50693), (815, 25813), (1555, 13529)]