19969884

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{239}}^1$

素因数の和:471

約数の個数: 72

約数和(自身を含む): 55560960

約数和(自身を除く): 35591076

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 66, 99, 132, 198, 211, 239, 396, 422, 478, 633, 717, 844, 956, 1266, 1434, 1899, 2151, 2321, 2532, 2629, 2868, 3798, 4302, 4642, 5258, 6963, 7596, 7887, 8604, 9284, 10516, 13926, 15774, 20889, 23661, 27852, 31548, 41778, 47322, 50429, 83556, 94644, 100858, 151287, 201716, 302574, 453861, 554719, 605148, 907722, 1109438, 1664157, 1815444, 2218876, 3328314, 4992471, 6656628, 9984942, 19969884]

約数ペア:

[(1, 19969884), (2, 9984942), (3, 6656628), (4, 4992471), (6, 3328314), (9, 2218876), (11, 1815444), (12, 1664157), (18, 1109438), (22, 907722), (33, 605148), (36, 554719), (44, 453861), (66, 302574), (99, 201716), (132, 151287), (198, 100858), (211, 94644), (239, 83556), (396, 50429), (422, 47322), (478, 41778), (633, 31548), (717, 27852), (844, 23661), (956, 20889), (1266, 15774), (1434, 13926), (1899, 10516), (2151, 9284), (2321, 8604), (2532, 7887), (2629, 7596), (2868, 6963), (3798, 5258), (4302, 4642)]