20048140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{1609}}^1$

素因数の和:1714

約数の個数: 48

約数和(自身を含む): 48686400

約数和(自身を除く): 28638260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 89, 140, 178, 356, 445, 623, 890, 1246, 1609, 1780, 2492, 3115, 3218, 6230, 6436, 8045, 11263, 12460, 16090, 22526, 32180, 45052, 56315, 112630, 143201, 225260, 286402, 572804, 716005, 1002407, 1432010, 2004814, 2864020, 4009628, 5012035, 10024070, 20048140]

約数ペア:

[(1, 20048140), (2, 10024070), (4, 5012035), (5, 4009628), (7, 2864020), (10, 2004814), (14, 1432010), (20, 1002407), (28, 716005), (35, 572804), (70, 286402), (89, 225260), (140, 143201), (178, 112630), (356, 56315), (445, 45052), (623, 32180), (890, 22526), (1246, 16090), (1609, 12460), (1780, 11263), (2492, 8045), (3115, 6436), (3218, 6230)]