20795740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{1669}}^1$

素因数の和:1774

約数の個数: 48

約数和(自身を含む): 50500800

約数和(自身を除く): 29705060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 89, 140, 178, 356, 445, 623, 890, 1246, 1669, 1780, 2492, 3115, 3338, 6230, 6676, 8345, 11683, 12460, 16690, 23366, 33380, 46732, 58415, 116830, 148541, 233660, 297082, 594164, 742705, 1039787, 1485410, 2079574, 2970820, 4159148, 5198935, 10397870, 20795740]

約数ペア:

[(1, 20795740), (2, 10397870), (4, 5198935), (5, 4159148), (7, 2970820), (10, 2079574), (14, 1485410), (20, 1039787), (28, 742705), (35, 594164), (70, 297082), (89, 233660), (140, 148541), (178, 116830), (356, 58415), (445, 46732), (623, 33380), (890, 23366), (1246, 16690), (1669, 12460), (1780, 11683), (2492, 8345), (3115, 6676), (3338, 6230)]