21068824

素因数分解:

$2^3\times 7^2\times {\mathrm{71}}^1\times {\mathrm{757}}^1$

素因数の和:848

約数の個数: 48

約数和(自身を含む): 46662480

約数和(自身を除く): 25593656

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 71, 98, 142, 196, 284, 392, 497, 568, 757, 994, 1514, 1988, 3028, 3479, 3976, 5299, 6056, 6958, 10598, 13916, 21196, 27832, 37093, 42392, 53747, 74186, 107494, 148372, 214988, 296744, 376229, 429976, 752458, 1504916, 2633603, 3009832, 5267206, 10534412, 21068824]

約数ペア:

[(1, 21068824), (2, 10534412), (4, 5267206), (7, 3009832), (8, 2633603), (14, 1504916), (28, 752458), (49, 429976), (56, 376229), (71, 296744), (98, 214988), (142, 148372), (196, 107494), (284, 74186), (392, 53747), (497, 42392), (568, 37093), (757, 27832), (994, 21196), (1514, 13916), (1988, 10598), (3028, 6958), (3479, 6056), (3976, 5299)]