21553714

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{271}}^1$

素因数の和:335

約数の個数: 64

約数和(自身を含む): 43868160

約数和(自身を除く): 22314446

約数列:

[1, 2, 7, 13, 14, 19, 23, 26, 38, 46, 91, 133, 161, 182, 247, 266, 271, 299, 322, 437, 494, 542, 598, 874, 1729, 1897, 2093, 3059, 3458, 3523, 3794, 4186, 5149, 5681, 6118, 6233, 7046, 10298, 11362, 12466, 24661, 36043, 39767, 43631, 49322, 66937, 72086, 79534, 81029, 87262, 118427, 133874, 162058, 236854, 468559, 567203, 828989, 937118, 1134406, 1539551, 1657978, 3079102, 10776857, 21553714]

約数ペア:

[(1, 21553714), (2, 10776857), (7, 3079102), (13, 1657978), (14, 1539551), (19, 1134406), (23, 937118), (26, 828989), (38, 567203), (46, 468559), (91, 236854), (133, 162058), (161, 133874), (182, 118427), (247, 87262), (266, 81029), (271, 79534), (299, 72086), (322, 66937), (437, 49322), (494, 43631), (542, 39767), (598, 36043), (874, 24661), (1729, 12466), (1897, 11362), (2093, 10298), (3059, 7046), (3458, 6233), (3523, 6118), (3794, 5681), (4186, 5149)]