9181991

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1$

素因数の和:191

約数の個数: 32

約数和(自身を含む): 12192768

約数和(自身を除く): 3010777

約数列:

[1, 7, 13, 23, 41, 91, 107, 161, 287, 299, 533, 749, 943, 1391, 2093, 2461, 3731, 4387, 6601, 9737, 12259, 17227, 30709, 31993, 57031, 85813, 100901, 223951, 399217, 706307, 1311713, 9181991]

約数ペア:

[(1, 9181991), (7, 1311713), (13, 706307), (23, 399217), (41, 223951), (91, 100901), (107, 85813), (161, 57031), (287, 31993), (299, 30709), (533, 17227), (749, 12259), (943, 9737), (1391, 6601), (2093, 4387), (2461, 3731)]