20868690

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{29}}^1\times {\mathrm{83}}^1$

素因数の和:156

約数の個数: 96

約数和(自身を含む): 55702080

約数和(自身を除く): 34833390

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 29, 30, 34, 51, 58, 83, 85, 87, 102, 145, 166, 170, 174, 249, 255, 289, 290, 415, 435, 493, 498, 510, 578, 830, 867, 870, 986, 1245, 1411, 1445, 1479, 1734, 2407, 2465, 2490, 2822, 2890, 2958, 4233, 4335, 4814, 4930, 7055, 7221, 7395, 8381, 8466, 8670, 12035, 14110, 14442, 14790, 16762, 21165, 23987, 24070, 25143, 36105, 40919, 41905, 42330, 47974, 50286, 71961, 72210, 81838, 83810, 119935, 122757, 125715, 143922, 204595, 239870, 245514, 251430, 359805, 409190, 613785, 695623, 719610, 1227570, 1391246, 2086869, 3478115, 4173738, 6956230, 10434345, 20868690]

約数ペア:

[(1, 20868690), (2, 10434345), (3, 6956230), (5, 4173738), (6, 3478115), (10, 2086869), (15, 1391246), (17, 1227570), (29, 719610), (30, 695623), (34, 613785), (51, 409190), (58, 359805), (83, 251430), (85, 245514), (87, 239870), (102, 204595), (145, 143922), (166, 125715), (170, 122757), (174, 119935), (249, 83810), (255, 81838), (289, 72210), (290, 71961), (415, 50286), (435, 47974), (493, 42330), (498, 41905), (510, 40919), (578, 36105), (830, 25143), (867, 24070), (870, 23987), (986, 21165), (1245, 16762), (1411, 14790), (1445, 14442), (1479, 14110), (1734, 12035), (2407, 8670), (2465, 8466), (2490, 8381), (2822, 7395), (2890, 7221), (2958, 7055), (4233, 4930), (4335, 4814)]