80727500

素因数分解:

$2^2\times 5^4\times 7^2\times {\mathrm{659}}^1$

素因数の和:697

約数の個数: 90

約数和(自身を含む): 205668540

約数和(自身を除く): 124941040

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 125, 140, 175, 196, 245, 250, 350, 490, 500, 625, 659, 700, 875, 980, 1225, 1250, 1318, 1750, 2450, 2500, 2636, 3295, 3500, 4375, 4613, 4900, 6125, 6590, 8750, 9226, 12250, 13180, 16475, 17500, 18452, 23065, 24500, 30625, 32291, 32950, 46130, 61250, 64582, 65900, 82375, 92260, 115325, 122500, 129164, 161455, 164750, 230650, 322910, 329500, 411875, 461300, 576625, 645820, 807275, 823750, 1153250, 1614550, 1647500, 2306500, 2883125, 3229100, 4036375, 5766250, 8072750, 11532500, 16145500, 20181875, 40363750, 80727500]

約数ペア:

[(1, 80727500), (2, 40363750), (4, 20181875), (5, 16145500), (7, 11532500), (10, 8072750), (14, 5766250), (20, 4036375), (25, 3229100), (28, 2883125), (35, 2306500), (49, 1647500), (50, 1614550), (70, 1153250), (98, 823750), (100, 807275), (125, 645820), (140, 576625), (175, 461300), (196, 411875), (245, 329500), (250, 322910), (350, 230650), (490, 164750), (500, 161455), (625, 129164), (659, 122500), (700, 115325), (875, 92260), (980, 82375), (1225, 65900), (1250, 64582), (1318, 61250), (1750, 46130), (2450, 32950), (2500, 32291), (2636, 30625), (3295, 24500), (3500, 23065), (4375, 18452), (4613, 17500), (4900, 16475), (6125, 13180), (6590, 12250), (8750, 9226)]