20512395920

素因数分解:

$2^4\times 5^1\times {\mathrm{467}}^1\times {\mathrm{677}}^1\times {\mathrm{811}}^1$

素因数の和:1968

約数の個数: 80

約数和(自身を含む): 47923057728

約数和(自身を除く): 27410661808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 467, 677, 811, 934, 1354, 1622, 1868, 2335, 2708, 3244, 3385, 3736, 4055, 4670, 5416, 6488, 6770, 7472, 8110, 9340, 10832, 12976, 13540, 16220, 18680, 27080, 32440, 37360, 54160, 64880, 316159, 378737, 549047, 632318, 757474, 1098094, 1264636, 1514948, 1580795, 1893685, 2196188, 2529272, 2745235, 3029896, 3161590, 3787370, 4392376, 5058544, 5490470, 6059792, 6323180, 7574740, 8784752, 10980940, 12646360, 15149480, 21961880, 25292720, 30298960, 43923760, 256404949, 512809898, 1025619796, 1282024745, 2051239592, 2564049490, 4102479184, 5128098980, 10256197960, 20512395920]

約数ペア:

[(1, 20512395920), (2, 10256197960), (4, 5128098980), (5, 4102479184), (8, 2564049490), (10, 2051239592), (16, 1282024745), (20, 1025619796), (40, 512809898), (80, 256404949), (467, 43923760), (677, 30298960), (811, 25292720), (934, 21961880), (1354, 15149480), (1622, 12646360), (1868, 10980940), (2335, 8784752), (2708, 7574740), (3244, 6323180), (3385, 6059792), (3736, 5490470), (4055, 5058544), (4670, 4392376), (5416, 3787370), (6488, 3161590), (6770, 3029896), (7472, 2745235), (8110, 2529272), (9340, 2196188), (10832, 1893685), (12976, 1580795), (13540, 1514948), (16220, 1264636), (18680, 1098094), (27080, 757474), (32440, 632318), (37360, 549047), (54160, 378737), (64880, 316159)]