19288940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{2039}}^1$

素因数の和:2102

約数の個数: 48

約数和(自身を含む): 45239040

約数和(自身を除く): 25950100

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 43, 44, 55, 86, 110, 172, 215, 220, 430, 473, 860, 946, 1892, 2039, 2365, 4078, 4730, 8156, 9460, 10195, 20390, 22429, 40780, 44858, 87677, 89716, 112145, 175354, 224290, 350708, 438385, 448580, 876770, 964447, 1753540, 1928894, 3857788, 4822235, 9644470, 19288940]

約数ペア:

[(1, 19288940), (2, 9644470), (4, 4822235), (5, 3857788), (10, 1928894), (11, 1753540), (20, 964447), (22, 876770), (43, 448580), (44, 438385), (55, 350708), (86, 224290), (110, 175354), (172, 112145), (215, 89716), (220, 87677), (430, 44858), (473, 40780), (860, 22429), (946, 20390), (1892, 10195), (2039, 9460), (2365, 8156), (4078, 4730)]