18778270

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{2017}}^1$

素因数の和:2057

約数の個数: 48

約数和(自身を含む): 41409360

約数和(自身を除く): 22631090

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 49, 70, 95, 98, 133, 190, 245, 266, 490, 665, 931, 1330, 1862, 2017, 4034, 4655, 9310, 10085, 14119, 20170, 28238, 38323, 70595, 76646, 98833, 141190, 191615, 197666, 268261, 383230, 494165, 536522, 988330, 1341305, 1877827, 2682610, 3755654, 9389135, 18778270]

約数ペア:

[(1, 18778270), (2, 9389135), (5, 3755654), (7, 2682610), (10, 1877827), (14, 1341305), (19, 988330), (35, 536522), (38, 494165), (49, 383230), (70, 268261), (95, 197666), (98, 191615), (133, 141190), (190, 98833), (245, 76646), (266, 70595), (490, 38323), (665, 28238), (931, 20170), (1330, 14119), (1862, 10085), (2017, 9310), (4034, 4655)]