21002984

素因数分解:

$2^3\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{673}}^1$

素因数の和:809

約数の個数: 32

約数和(自身を含む): 40763520

約数和(自身を除く): 19760536

約数列:

[1, 2, 4, 8, 47, 83, 94, 166, 188, 332, 376, 664, 673, 1346, 2692, 3901, 5384, 7802, 15604, 31208, 31631, 55859, 63262, 111718, 126524, 223436, 253048, 446872, 2625373, 5250746, 10501492, 21002984]

約数ペア:

[(1, 21002984), (2, 10501492), (4, 5250746), (8, 2625373), (47, 446872), (83, 253048), (94, 223436), (166, 126524), (188, 111718), (332, 63262), (376, 55859), (664, 31631), (673, 31208), (1346, 15604), (2692, 7802), (3901, 5384)]