20010914

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{977}}^1$

素因数の和:1023

約数の個数: 48

約数和(自身を含む): 40137120

約数和(自身を除く): 20126206

約数列:

[1, 2, 7, 11, 14, 19, 22, 38, 49, 77, 98, 133, 154, 209, 266, 418, 539, 931, 977, 1078, 1463, 1862, 1954, 2926, 6839, 10241, 10747, 13678, 18563, 20482, 21494, 37126, 47873, 75229, 95746, 129941, 150458, 204193, 259882, 408386, 526603, 909587, 1053206, 1429351, 1819174, 2858702, 10005457, 20010914]

約数ペア:

[(1, 20010914), (2, 10005457), (7, 2858702), (11, 1819174), (14, 1429351), (19, 1053206), (22, 909587), (38, 526603), (49, 408386), (77, 259882), (98, 204193), (133, 150458), (154, 129941), (209, 95746), (266, 75229), (418, 47873), (539, 37126), (931, 21494), (977, 20482), (1078, 18563), (1463, 13678), (1862, 10747), (1954, 10241), (2926, 6839)]