19944808

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{389}}^1$

素因数の和:454

約数の個数: 64

約数和(自身を含む): 44226000

約数和(自身を除く): 24281192

約数列:

[1, 2, 4, 8, 13, 17, 26, 29, 34, 52, 58, 68, 104, 116, 136, 221, 232, 377, 389, 442, 493, 754, 778, 884, 986, 1508, 1556, 1768, 1972, 3016, 3112, 3944, 5057, 6409, 6613, 10114, 11281, 12818, 13226, 20228, 22562, 25636, 26452, 40456, 45124, 51272, 52904, 85969, 90248, 146653, 171938, 191777, 293306, 343876, 383554, 586612, 687752, 767108, 1173224, 1534216, 2493101, 4986202, 9972404, 19944808]

約数ペア:

[(1, 19944808), (2, 9972404), (4, 4986202), (8, 2493101), (13, 1534216), (17, 1173224), (26, 767108), (29, 687752), (34, 586612), (52, 383554), (58, 343876), (68, 293306), (104, 191777), (116, 171938), (136, 146653), (221, 90248), (232, 85969), (377, 52904), (389, 51272), (442, 45124), (493, 40456), (754, 26452), (778, 25636), (884, 22562), (986, 20228), (1508, 13226), (1556, 12818), (1768, 11281), (1972, 10114), (3016, 6613), (3112, 6409), (3944, 5057)]