20652100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{163}}^1\times {\mathrm{181}}^1$

素因数の和:365

約数の個数: 72

約数和(自身を含む): 51816128

約数和(自身を除く): 31164028

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 163, 175, 181, 326, 350, 362, 652, 700, 724, 815, 905, 1141, 1267, 1630, 1810, 2282, 2534, 3260, 3620, 4075, 4525, 4564, 5068, 5705, 6335, 8150, 9050, 11410, 12670, 16300, 18100, 22820, 25340, 28525, 29503, 31675, 57050, 59006, 63350, 114100, 118012, 126700, 147515, 206521, 295030, 413042, 590060, 737575, 826084, 1032605, 1475150, 2065210, 2950300, 4130420, 5163025, 10326050, 20652100]

約数ペア:

[(1, 20652100), (2, 10326050), (4, 5163025), (5, 4130420), (7, 2950300), (10, 2065210), (14, 1475150), (20, 1032605), (25, 826084), (28, 737575), (35, 590060), (50, 413042), (70, 295030), (100, 206521), (140, 147515), (163, 126700), (175, 118012), (181, 114100), (326, 63350), (350, 59006), (362, 57050), (652, 31675), (700, 29503), (724, 28525), (815, 25340), (905, 22820), (1141, 18100), (1267, 16300), (1630, 12670), (1810, 11410), (2282, 9050), (2534, 8150), (3260, 6335), (3620, 5705), (4075, 5068), (4525, 4564)]