81182500

素因数分解:

$2^2\times 5^4\times 7^1\times {\mathrm{4639}}^1$

素因数の和:4670

約数の個数: 60

約数和(自身を含む): 202935040

約数和(自身を除く): 121752540

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 125, 140, 175, 250, 350, 500, 625, 700, 875, 1250, 1750, 2500, 3500, 4375, 4639, 8750, 9278, 17500, 18556, 23195, 32473, 46390, 64946, 92780, 115975, 129892, 162365, 231950, 324730, 463900, 579875, 649460, 811825, 1159750, 1623650, 2319500, 2899375, 3247300, 4059125, 5798750, 8118250, 11597500, 16236500, 20295625, 40591250, 81182500]

約数ペア:

[(1, 81182500), (2, 40591250), (4, 20295625), (5, 16236500), (7, 11597500), (10, 8118250), (14, 5798750), (20, 4059125), (25, 3247300), (28, 2899375), (35, 2319500), (50, 1623650), (70, 1159750), (100, 811825), (125, 649460), (140, 579875), (175, 463900), (250, 324730), (350, 231950), (500, 162365), (625, 129892), (700, 115975), (875, 92780), (1250, 64946), (1750, 46390), (2500, 32473), (3500, 23195), (4375, 18556), (4639, 17500), (8750, 9278)]