18788944

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{1031}}^1$

素因数の和:1123

約数の個数: 40

約数和(自身を含む): 39158208

約数和(自身を除く): 20369264

約数列:

[1, 2, 4, 8, 16, 17, 34, 67, 68, 134, 136, 268, 272, 536, 1031, 1072, 1139, 2062, 2278, 4124, 4556, 8248, 9112, 16496, 17527, 18224, 35054, 69077, 70108, 138154, 140216, 276308, 280432, 552616, 1105232, 1174309, 2348618, 4697236, 9394472, 18788944]

約数ペア:

[(1, 18788944), (2, 9394472), (4, 4697236), (8, 2348618), (16, 1174309), (17, 1105232), (34, 552616), (67, 280432), (68, 276308), (134, 140216), (136, 138154), (268, 70108), (272, 69077), (536, 35054), (1031, 18224), (1072, 17527), (1139, 16496), (2062, 9112), (2278, 8248), (4124, 4556)]