20586215

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{211}}^1$

素因数の和:327

約数の個数: 32

約数和(自身を含む): 28492800

約数和(自身を除く): 7906585

約数列:

[1, 5, 13, 19, 65, 79, 95, 211, 247, 395, 1027, 1055, 1235, 1501, 2743, 4009, 5135, 7505, 13715, 16669, 19513, 20045, 52117, 83345, 97565, 216697, 260585, 316711, 1083485, 1583555, 4117243, 20586215]

約数ペア:

[(1, 20586215), (5, 4117243), (13, 1583555), (19, 1083485), (65, 316711), (79, 260585), (95, 216697), (211, 97565), (247, 83345), (395, 52117), (1027, 20045), (1055, 19513), (1235, 16669), (1501, 13715), (2743, 7505), (4009, 5135)]