20968178

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{367}}^1$

素因数の和:447

約数の個数: 48

約数和(自身を含む): 40777344

約数和(自身を除く): 19809166

約数列:

[1, 2, 7, 11, 14, 22, 49, 53, 77, 98, 106, 154, 367, 371, 539, 583, 734, 742, 1078, 1166, 2569, 2597, 4037, 4081, 5138, 5194, 8074, 8162, 17983, 19451, 28259, 28567, 35966, 38902, 56518, 57134, 136157, 197813, 213961, 272314, 395626, 427922, 953099, 1497727, 1906198, 2995454, 10484089, 20968178]

約数ペア:

[(1, 20968178), (2, 10484089), (7, 2995454), (11, 1906198), (14, 1497727), (22, 953099), (49, 427922), (53, 395626), (77, 272314), (98, 213961), (106, 197813), (154, 136157), (367, 57134), (371, 56518), (539, 38902), (583, 35966), (734, 28567), (742, 28259), (1078, 19451), (1166, 17983), (2569, 8162), (2597, 8074), (4037, 5194), (4081, 5138)]