20993480

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{1201}}^1$

素因数の和:1254

約数の個数: 64

約数和(自身を含む): 51926400

約数和(自身を除く): 30932920

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 23, 38, 40, 46, 76, 92, 95, 115, 152, 184, 190, 230, 380, 437, 460, 760, 874, 920, 1201, 1748, 2185, 2402, 3496, 4370, 4804, 6005, 8740, 9608, 12010, 17480, 22819, 24020, 27623, 45638, 48040, 55246, 91276, 110492, 114095, 138115, 182552, 220984, 228190, 276230, 456380, 524837, 552460, 912760, 1049674, 1104920, 2099348, 2624185, 4198696, 5248370, 10496740, 20993480]

約数ペア:

[(1, 20993480), (2, 10496740), (4, 5248370), (5, 4198696), (8, 2624185), (10, 2099348), (19, 1104920), (20, 1049674), (23, 912760), (38, 552460), (40, 524837), (46, 456380), (76, 276230), (92, 228190), (95, 220984), (115, 182552), (152, 138115), (184, 114095), (190, 110492), (230, 91276), (380, 55246), (437, 48040), (460, 45638), (760, 27623), (874, 24020), (920, 22819), (1201, 17480), (1748, 12010), (2185, 9608), (2402, 8740), (3496, 6005), (4370, 4804)]