21516692

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{239}}^1\times {\mathrm{317}}^1$

素因数の和:631

約数の個数: 24

約数和(自身を含む): 38465280

約数和(自身を除く): 16948588

約数列:

[1, 2, 4, 71, 142, 239, 284, 317, 478, 634, 956, 1268, 16969, 22507, 33938, 45014, 67876, 75763, 90028, 151526, 303052, 5379173, 10758346, 21516692]

約数ペア:

[(1, 21516692), (2, 10758346), (4, 5379173), (71, 303052), (142, 151526), (239, 90028), (284, 75763), (317, 67876), (478, 45014), (634, 33938), (956, 22507), (1268, 16969)]