20216816

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{401}}^1$

素因数の和:569

約数の個数: 40

約数和(自身を含む): 41274144

約数和(自身を除く): 21057328

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 137, 184, 274, 368, 401, 548, 802, 1096, 1604, 2192, 3151, 3208, 6302, 6416, 9223, 12604, 18446, 25208, 36892, 50416, 54937, 73784, 109874, 147568, 219748, 439496, 878992, 1263551, 2527102, 5054204, 10108408, 20216816]

約数ペア:

[(1, 20216816), (2, 10108408), (4, 5054204), (8, 2527102), (16, 1263551), (23, 878992), (46, 439496), (92, 219748), (137, 147568), (184, 109874), (274, 73784), (368, 54937), (401, 50416), (548, 36892), (802, 25208), (1096, 18446), (1604, 12604), (2192, 9223), (3151, 6416), (3208, 6302)]