20378708

素因数分解:

$2^2\times 7^2\times {\mathrm{173}}^1\times {\mathrm{601}}^1$

素因数の和:792

約数の個数: 36

約数和(自身を含む): 41794452

約数和(自身を除く): 21415744

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 173, 196, 346, 601, 692, 1202, 1211, 2404, 2422, 4207, 4844, 8414, 8477, 16828, 16954, 29449, 33908, 58898, 103973, 117796, 207946, 415892, 727811, 1455622, 2911244, 5094677, 10189354, 20378708]

約数ペア:

[(1, 20378708), (2, 10189354), (4, 5094677), (7, 2911244), (14, 1455622), (28, 727811), (49, 415892), (98, 207946), (173, 117796), (196, 103973), (346, 58898), (601, 33908), (692, 29449), (1202, 16954), (1211, 16828), (2404, 8477), (2422, 8414), (4207, 4844)]