1998740

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^2\times {\mathrm{73}}^1$

素因数の和:156

約数の個数: 36

約数和(自身を含む): 4372956

約数和(自身を除く): 2374216

約数列:

[1, 2, 4, 5, 10, 20, 37, 73, 74, 146, 148, 185, 292, 365, 370, 730, 740, 1369, 1460, 2701, 2738, 5402, 5476, 6845, 10804, 13505, 13690, 27010, 27380, 54020, 99937, 199874, 399748, 499685, 999370, 1998740]

約数ペア:

[(1, 1998740), (2, 999370), (4, 499685), (5, 399748), (10, 199874), (20, 99937), (37, 54020), (73, 27380), (74, 27010), (146, 13690), (148, 13505), (185, 10804), (292, 6845), (365, 5476), (370, 5402), (730, 2738), (740, 2701), (1369, 1460)]