20928545

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{3491}}^1$

素因数の和:3616

約数の個数: 16

約数和(自身を含む): 27656640

約数和(自身を除く): 6728095

約数列:

[1, 5, 11, 55, 109, 545, 1199, 3491, 5995, 17455, 38401, 192005, 380519, 1902595, 4185709, 20928545]

約数ペア:

[(1, 20928545), (5, 4185709), (11, 1902595), (55, 380519), (109, 192005), (545, 38401), (1199, 17455), (3491, 5995)]