82103420

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{199}}^1\times {\mathrm{421}}^1$

素因数の和:643

約数の個数: 72

約数和(自身を含む): 202053600

約数和(自身を除く): 119950180

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 199, 245, 398, 421, 490, 796, 842, 980, 995, 1393, 1684, 1990, 2105, 2786, 2947, 3980, 4210, 5572, 5894, 6965, 8420, 9751, 11788, 13930, 14735, 19502, 20629, 27860, 29470, 39004, 41258, 48755, 58940, 82516, 83779, 97510, 103145, 167558, 195020, 206290, 335116, 412580, 418895, 586453, 837790, 1172906, 1675580, 2345812, 2932265, 4105171, 5864530, 8210342, 11729060, 16420684, 20525855, 41051710, 82103420]

約数ペア:

[(1, 82103420), (2, 41051710), (4, 20525855), (5, 16420684), (7, 11729060), (10, 8210342), (14, 5864530), (20, 4105171), (28, 2932265), (35, 2345812), (49, 1675580), (70, 1172906), (98, 837790), (140, 586453), (196, 418895), (199, 412580), (245, 335116), (398, 206290), (421, 195020), (490, 167558), (796, 103145), (842, 97510), (980, 83779), (995, 82516), (1393, 58940), (1684, 48755), (1990, 41258), (2105, 39004), (2786, 29470), (2947, 27860), (3980, 20629), (4210, 19502), (5572, 14735), (5894, 13930), (6965, 11788), (8420, 9751)]