19997264

素因数分解:

$2^4\times 7^1\times {\mathrm{61}}^1\times {\mathrm{2927}}^1$

素因数の和:3003

約数の個数: 40

約数和(自身を含む): 45020928

約数和(自身を除く): 25023664

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 61, 112, 122, 244, 427, 488, 854, 976, 1708, 2927, 3416, 5854, 6832, 11708, 20489, 23416, 40978, 46832, 81956, 163912, 178547, 327824, 357094, 714188, 1249829, 1428376, 2499658, 2856752, 4999316, 9998632, 19997264]

約数ペア:

[(1, 19997264), (2, 9998632), (4, 4999316), (7, 2856752), (8, 2499658), (14, 1428376), (16, 1249829), (28, 714188), (56, 357094), (61, 327824), (112, 178547), (122, 163912), (244, 81956), (427, 46832), (488, 40978), (854, 23416), (976, 20489), (1708, 11708), (2927, 6832), (3416, 5854)]