21505708

素因数分解:

$2^2\times 7^2\times {\mathrm{113}}^1\times {\mathrm{971}}^1$

素因数の和:1102

約数の個数: 36

約数和(自身を含む): 44212392

約数和(自身を除く): 22706684

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 113, 196, 226, 452, 791, 971, 1582, 1942, 3164, 3884, 5537, 6797, 11074, 13594, 22148, 27188, 47579, 95158, 109723, 190316, 219446, 438892, 768061, 1536122, 3072244, 5376427, 10752854, 21505708]

約数ペア:

[(1, 21505708), (2, 10752854), (4, 5376427), (7, 3072244), (14, 1536122), (28, 768061), (49, 438892), (98, 219446), (113, 190316), (196, 109723), (226, 95158), (452, 47579), (791, 27188), (971, 22148), (1582, 13594), (1942, 11074), (3164, 6797), (3884, 5537)]