21262801

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{907}}^1$

素因数の和:1128

約数の個数: 16

約数和(自身を含む): 25888896

約数和(自身を除く): 4626095

約数列:

[1, 7, 17, 119, 197, 907, 1379, 3349, 6349, 15419, 23443, 107933, 178679, 1250753, 3037543, 21262801]

約数ペア:

[(1, 21262801), (7, 3037543), (17, 1250753), (119, 178679), (197, 107933), (907, 23443), (1379, 15419), (3349, 6349)]