20409656

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{103}}^1$

素因数の和:204

約数の個数: 64

約数和(自身を含む): 43130880

約数和(自身を除く): 22721224

約数列:

[1, 2, 4, 8, 17, 31, 34, 47, 62, 68, 94, 103, 124, 136, 188, 206, 248, 376, 412, 527, 799, 824, 1054, 1457, 1598, 1751, 2108, 2914, 3193, 3196, 3502, 4216, 4841, 5828, 6386, 6392, 7004, 9682, 11656, 12772, 14008, 19364, 24769, 25544, 38728, 49538, 54281, 82297, 99076, 108562, 150071, 164594, 198152, 217124, 300142, 329188, 434248, 600284, 658376, 1200568, 2551207, 5102414, 10204828, 20409656]

約数ペア:

[(1, 20409656), (2, 10204828), (4, 5102414), (8, 2551207), (17, 1200568), (31, 658376), (34, 600284), (47, 434248), (62, 329188), (68, 300142), (94, 217124), (103, 198152), (124, 164594), (136, 150071), (188, 108562), (206, 99076), (248, 82297), (376, 54281), (412, 49538), (527, 38728), (799, 25544), (824, 24769), (1054, 19364), (1457, 14008), (1598, 12772), (1751, 11656), (2108, 9682), (2914, 7004), (3193, 6392), (3196, 6386), (3502, 5828), (4216, 4841)]