21587272

素因数分解:

$2^3\times 7^1\times {\mathrm{397}}^1\times {\mathrm{971}}^1$

素因数の和:1381

約数の個数: 32

約数和(自身を含む): 46422720

約数和(自身を除く): 24835448

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 397, 794, 971, 1588, 1942, 2779, 3176, 3884, 5558, 6797, 7768, 11116, 13594, 22232, 27188, 54376, 385487, 770974, 1541948, 2698409, 3083896, 5396818, 10793636, 21587272]

約数ペア:

[(1, 21587272), (2, 10793636), (4, 5396818), (7, 3083896), (8, 2698409), (14, 1541948), (28, 770974), (56, 385487), (397, 54376), (794, 27188), (971, 22232), (1588, 13594), (1942, 11116), (2779, 7768), (3176, 6797), (3884, 5558)]