9991331

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{1123}}^1$

素因数の和:1202

約数の個数: 16

約数和(自身を含む): 12085248

約数和(自身を除く): 2093917

約数列:

[1, 7, 31, 41, 217, 287, 1123, 1271, 7861, 8897, 34813, 46043, 243691, 322301, 1427333, 9991331]

約数ペア:

[(1, 9991331), (7, 1427333), (31, 322301), (41, 243691), (217, 46043), (287, 34813), (1123, 8897), (1271, 7861)]