20197028740

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{421}}^1\times {\mathrm{48953}}^1$

素因数の和:49397

約数の個数: 72

約数和(自身を含む): 49456659672

約数和(自身を除く): 29259630932

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 421, 490, 842, 980, 1684, 2105, 2947, 4210, 5894, 8420, 11788, 14735, 20629, 29470, 41258, 48953, 58940, 82516, 97906, 103145, 195812, 206290, 244765, 342671, 412580, 489530, 685342, 979060, 1370684, 1713355, 2398697, 3426710, 4797394, 6853420, 9594788, 11993485, 20609213, 23986970, 41218426, 47973940, 82436852, 103046065, 144264491, 206092130, 288528982, 412184260, 577057964, 721322455, 1009851437, 1442644910, 2019702874, 2885289820, 4039405748, 5049257185, 10098514370, 20197028740]

約数ペア:

[(1, 20197028740), (2, 10098514370), (4, 5049257185), (5, 4039405748), (7, 2885289820), (10, 2019702874), (14, 1442644910), (20, 1009851437), (28, 721322455), (35, 577057964), (49, 412184260), (70, 288528982), (98, 206092130), (140, 144264491), (196, 103046065), (245, 82436852), (421, 47973940), (490, 41218426), (842, 23986970), (980, 20609213), (1684, 11993485), (2105, 9594788), (2947, 6853420), (4210, 4797394), (5894, 3426710), (8420, 2398697), (11788, 1713355), (14735, 1370684), (20629, 979060), (29470, 685342), (41258, 489530), (48953, 412580), (58940, 342671), (82516, 244765), (97906, 206290), (103145, 195812)]