221311727

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{2579}}^1$

素因数の和:2663

約数の個数: 32

約数和(自身を含む): 291271680

約数和(自身を除く): 69959953

約数列:

[1, 7, 13, 23, 41, 91, 161, 287, 299, 533, 943, 2093, 2579, 3731, 6601, 12259, 18053, 33527, 59317, 85813, 105739, 234689, 415219, 740173, 771121, 1374607, 2431997, 5397847, 9622249, 17023979, 31615961, 221311727]

約数ペア:

[(1, 221311727), (7, 31615961), (13, 17023979), (23, 9622249), (41, 5397847), (91, 2431997), (161, 1374607), (287, 771121), (299, 740173), (533, 415219), (943, 234689), (2093, 105739), (2579, 85813), (3731, 59317), (6601, 33527), (12259, 18053)]