20009008

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{463}}^1$

素因数の和:581

約数の個数: 40

約数和(自身を含む): 40447808

約数和(自身を除く): 20438800

約数列:

[1, 2, 4, 8, 16, 37, 73, 74, 146, 148, 292, 296, 463, 584, 592, 926, 1168, 1852, 2701, 3704, 5402, 7408, 10804, 17131, 21608, 33799, 34262, 43216, 67598, 68524, 135196, 137048, 270392, 274096, 540784, 1250563, 2501126, 5002252, 10004504, 20009008]

約数ペア:

[(1, 20009008), (2, 10004504), (4, 5002252), (8, 2501126), (16, 1250563), (37, 540784), (73, 274096), (74, 270392), (146, 137048), (148, 135196), (292, 68524), (296, 67598), (463, 43216), (584, 34262), (592, 33799), (926, 21608), (1168, 17131), (1852, 10804), (2701, 7408), (3704, 5402)]