19874428

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{971}}^1$

素因数の和:1042

約数の個数: 48

約数和(自身を含む): 43110144

約数和(自身を除く): 23235716

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 43, 68, 86, 119, 172, 238, 301, 476, 602, 731, 971, 1204, 1462, 1942, 2924, 3884, 5117, 6797, 10234, 13594, 16507, 20468, 27188, 33014, 41753, 66028, 83506, 115549, 167012, 231098, 292271, 462196, 584542, 709801, 1169084, 1419602, 2839204, 4968607, 9937214, 19874428]

約数ペア:

[(1, 19874428), (2, 9937214), (4, 4968607), (7, 2839204), (14, 1419602), (17, 1169084), (28, 709801), (34, 584542), (43, 462196), (68, 292271), (86, 231098), (119, 167012), (172, 115549), (238, 83506), (301, 66028), (476, 41753), (602, 33014), (731, 27188), (971, 20468), (1204, 16507), (1462, 13594), (1942, 10234), (2924, 6797), (3884, 5117)]