21982280

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{10369}}^1$

素因数の和:10433

約数の個数: 32

約数和(自身を含む): 50398200

約数和(自身を除く): 28415920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 10369, 20738, 41476, 51845, 82952, 103690, 207380, 414760, 549557, 1099114, 2198228, 2747785, 4396456, 5495570, 10991140, 21982280]

約数ペア:

[(1, 21982280), (2, 10991140), (4, 5495570), (5, 4396456), (8, 2747785), (10, 2198228), (20, 1099114), (40, 549557), (53, 414760), (106, 207380), (212, 103690), (265, 82952), (424, 51845), (530, 41476), (1060, 20738), (2120, 10369)]