21638750

素因数分解:

$2^1\times 5^4\times 7^1\times {\mathrm{2473}}^1$

素因数の和:2502

約数の個数: 40

約数和(自身を含む): 46372656

約数和(自身を除く): 24733906

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 125, 175, 250, 350, 625, 875, 1250, 1750, 2473, 4375, 4946, 8750, 12365, 17311, 24730, 34622, 61825, 86555, 123650, 173110, 309125, 432775, 618250, 865550, 1545625, 2163875, 3091250, 4327750, 10819375, 21638750]

約数ペア:

[(1, 21638750), (2, 10819375), (5, 4327750), (7, 3091250), (10, 2163875), (14, 1545625), (25, 865550), (35, 618250), (50, 432775), (70, 309125), (125, 173110), (175, 123650), (250, 86555), (350, 61825), (625, 34622), (875, 24730), (1250, 17311), (1750, 12365), (2473, 8750), (4375, 4946)]