21120045

素因数分解:

$3^1\times 5^1\times {\mathrm{211}}^1\times {\mathrm{6673}}^1$

素因数の和:6892

約数の個数: 16

約数和(自身を含む): 33957312

約数和(自身を除く): 12837267

約数列:

[1, 3, 5, 15, 211, 633, 1055, 3165, 6673, 20019, 33365, 100095, 1408003, 4224009, 7040015, 21120045]

約数ペア:

[(1, 21120045), (3, 7040015), (5, 4224009), (15, 1408003), (211, 100095), (633, 33365), (1055, 20019), (3165, 6673)]