21537656

素因数分解:

$2^3\times 7^3\times {\mathrm{47}}^1\times {\mathrm{167}}^1$

素因数の和:241

約数の個数: 64

約数和(自身を含む): 48384000

約数和(自身を除く): 26846344

約数列:

[1, 2, 4, 7, 8, 14, 28, 47, 49, 56, 94, 98, 167, 188, 196, 329, 334, 343, 376, 392, 658, 668, 686, 1169, 1316, 1336, 1372, 2303, 2338, 2632, 2744, 4606, 4676, 7849, 8183, 9212, 9352, 15698, 16121, 16366, 18424, 31396, 32242, 32732, 54943, 57281, 62792, 64484, 65464, 109886, 114562, 128968, 219772, 229124, 384601, 439544, 458248, 769202, 1538404, 2692207, 3076808, 5384414, 10768828, 21537656]

約数ペア:

[(1, 21537656), (2, 10768828), (4, 5384414), (7, 3076808), (8, 2692207), (14, 1538404), (28, 769202), (47, 458248), (49, 439544), (56, 384601), (94, 229124), (98, 219772), (167, 128968), (188, 114562), (196, 109886), (329, 65464), (334, 64484), (343, 62792), (376, 57281), (392, 54943), (658, 32732), (668, 32242), (686, 31396), (1169, 18424), (1316, 16366), (1336, 16121), (1372, 15698), (2303, 9352), (2338, 9212), (2632, 8183), (2744, 7849), (4606, 4676)]