20982346

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1$

素因数の和:211

約数の個数: 64

約数和(自身を含む): 42301440

約数和(自身を除く): 21319094

約数列:

[1, 2, 7, 11, 14, 19, 22, 38, 71, 77, 101, 133, 142, 154, 202, 209, 266, 418, 497, 707, 781, 994, 1111, 1349, 1414, 1463, 1562, 1919, 2222, 2698, 2926, 3838, 5467, 7171, 7777, 9443, 10934, 13433, 14342, 14839, 15554, 18886, 21109, 26866, 29678, 42218, 50197, 78881, 100394, 103873, 136249, 147763, 157762, 207746, 272498, 295526, 552167, 953743, 1104334, 1498739, 1907486, 2997478, 10491173, 20982346]

約数ペア:

[(1, 20982346), (2, 10491173), (7, 2997478), (11, 1907486), (14, 1498739), (19, 1104334), (22, 953743), (38, 552167), (71, 295526), (77, 272498), (101, 207746), (133, 157762), (142, 147763), (154, 136249), (202, 103873), (209, 100394), (266, 78881), (418, 50197), (497, 42218), (707, 29678), (781, 26866), (994, 21109), (1111, 18886), (1349, 15554), (1414, 14839), (1463, 14342), (1562, 13433), (1919, 10934), (2222, 9443), (2698, 7777), (2926, 7171), (3838, 5467)]