20053180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{227}}^1\times {\mathrm{631}}^1$

素因数の和:874

約数の個数: 48

約数和(自身を含む): 48416256

約数和(自身を除く): 28363076

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 227, 454, 631, 908, 1135, 1262, 1589, 2270, 2524, 3155, 3178, 4417, 4540, 6310, 6356, 7945, 8834, 12620, 15890, 17668, 22085, 31780, 44170, 88340, 143237, 286474, 572948, 716185, 1002659, 1432370, 2005318, 2864740, 4010636, 5013295, 10026590, 20053180]

約数ペア:

[(1, 20053180), (2, 10026590), (4, 5013295), (5, 4010636), (7, 2864740), (10, 2005318), (14, 1432370), (20, 1002659), (28, 716185), (35, 572948), (70, 286474), (140, 143237), (227, 88340), (454, 44170), (631, 31780), (908, 22085), (1135, 17668), (1262, 15890), (1589, 12620), (2270, 8834), (2524, 7945), (3155, 6356), (3178, 6310), (4417, 4540)]