21152904

素因数分解:

$2^3\times 3^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{199}}^1$

素因数の和:354

約数の個数: 64

約数和(自身を含む): 54912000

約数和(自身を除く): 33759096

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 43, 86, 103, 129, 172, 199, 206, 258, 309, 344, 398, 412, 516, 597, 618, 796, 824, 1032, 1194, 1236, 1592, 2388, 2472, 4429, 4776, 8557, 8858, 13287, 17114, 17716, 20497, 25671, 26574, 34228, 35432, 40994, 51342, 53148, 61491, 68456, 81988, 102684, 106296, 122982, 163976, 205368, 245964, 491928, 881371, 1762742, 2644113, 3525484, 5288226, 7050968, 10576452, 21152904]

約数ペア:

[(1, 21152904), (2, 10576452), (3, 7050968), (4, 5288226), (6, 3525484), (8, 2644113), (12, 1762742), (24, 881371), (43, 491928), (86, 245964), (103, 205368), (129, 163976), (172, 122982), (199, 106296), (206, 102684), (258, 81988), (309, 68456), (344, 61491), (398, 53148), (412, 51342), (516, 40994), (597, 35432), (618, 34228), (796, 26574), (824, 25671), (1032, 20497), (1194, 17716), (1236, 17114), (1592, 13287), (2388, 8858), (2472, 8557), (4429, 4776)]