19918404

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{281}}^1$

素因数の和:481

約数の個数: 72

約数和(自身を含む): 55429920

約数和(自身を除く): 35511516

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 66, 99, 132, 179, 198, 281, 358, 396, 537, 562, 716, 843, 1074, 1124, 1611, 1686, 1969, 2148, 2529, 3091, 3222, 3372, 3938, 5058, 5907, 6182, 6444, 7876, 9273, 10116, 11814, 12364, 17721, 18546, 23628, 27819, 35442, 37092, 50299, 55638, 70884, 100598, 111276, 150897, 201196, 301794, 452691, 553289, 603588, 905382, 1106578, 1659867, 1810764, 2213156, 3319734, 4979601, 6639468, 9959202, 19918404]

約数ペア:

[(1, 19918404), (2, 9959202), (3, 6639468), (4, 4979601), (6, 3319734), (9, 2213156), (11, 1810764), (12, 1659867), (18, 1106578), (22, 905382), (33, 603588), (36, 553289), (44, 452691), (66, 301794), (99, 201196), (132, 150897), (179, 111276), (198, 100598), (281, 70884), (358, 55638), (396, 50299), (537, 37092), (562, 35442), (716, 27819), (843, 23628), (1074, 18546), (1124, 17721), (1611, 12364), (1686, 11814), (1969, 10116), (2148, 9273), (2529, 7876), (3091, 6444), (3222, 6182), (3372, 5907), (3938, 5058)]