20890331

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{15959}}^1$

素因数の和:15994

約数の個数: 16

約数和(自身を含む): 27578880

約数和(自身を除く): 6688549

約数列:

[1, 7, 11, 17, 77, 119, 187, 1309, 15959, 111713, 175549, 271303, 1228843, 1899121, 2984333, 20890331]

約数ペア:

[(1, 20890331), (7, 2984333), (11, 1899121), (17, 1228843), (77, 271303), (119, 175549), (187, 111713), (1309, 15959)]