21972784

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{103}}^1\times {\mathrm{199}}^1$

素因数の和:377

約数の個数: 40

約数和(自身を含む): 43846400

約数和(自身を除く): 21873616

約数列:

[1, 2, 4, 8, 16, 67, 103, 134, 199, 206, 268, 398, 412, 536, 796, 824, 1072, 1592, 1648, 3184, 6901, 13333, 13802, 20497, 26666, 27604, 40994, 53332, 55208, 81988, 106664, 110416, 163976, 213328, 327952, 1373299, 2746598, 5493196, 10986392, 21972784]

約数ペア:

[(1, 21972784), (2, 10986392), (4, 5493196), (8, 2746598), (16, 1373299), (67, 327952), (103, 213328), (134, 163976), (199, 110416), (206, 106664), (268, 81988), (398, 55208), (412, 53332), (536, 40994), (796, 27604), (824, 26666), (1072, 20497), (1592, 13802), (1648, 13333), (3184, 6901)]