21710689

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^2\times {\mathrm{41}}^1$

素因数の和:118

約数の個数: 48

約数和(自身を含む): 31215744

約数和(自身を除く): 9505055

約数列:

[1, 7, 11, 13, 23, 41, 77, 91, 143, 161, 253, 287, 299, 451, 529, 533, 943, 1001, 1771, 2093, 3157, 3289, 3703, 3731, 5819, 5863, 6601, 6877, 10373, 12259, 21689, 23023, 40733, 41041, 48139, 72611, 75647, 85813, 134849, 151823, 238579, 281957, 529529, 943943, 1670053, 1973699, 3101527, 21710689]

約数ペア:

[(1, 21710689), (7, 3101527), (11, 1973699), (13, 1670053), (23, 943943), (41, 529529), (77, 281957), (91, 238579), (143, 151823), (161, 134849), (253, 85813), (287, 75647), (299, 72611), (451, 48139), (529, 41041), (533, 40733), (943, 23023), (1001, 21689), (1771, 12259), (2093, 10373), (3157, 6877), (3289, 6601), (3703, 5863), (3731, 5819)]