20987296

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{547}}^1$

素因数の和:677

約数の個数: 48

約数和(自身を含む): 45571680

約数和(自身を除く): 24584384

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 109, 176, 218, 352, 436, 547, 872, 1094, 1199, 1744, 2188, 2398, 3488, 4376, 4796, 6017, 8752, 9592, 12034, 17504, 19184, 24068, 38368, 48136, 59623, 96272, 119246, 192544, 238492, 476984, 655853, 953968, 1311706, 1907936, 2623412, 5246824, 10493648, 20987296]

約数ペア:

[(1, 20987296), (2, 10493648), (4, 5246824), (8, 2623412), (11, 1907936), (16, 1311706), (22, 953968), (32, 655853), (44, 476984), (88, 238492), (109, 192544), (176, 119246), (218, 96272), (352, 59623), (436, 48136), (547, 38368), (872, 24068), (1094, 19184), (1199, 17504), (1744, 12034), (2188, 9592), (2398, 8752), (3488, 6017), (4376, 4796)]