2221540

素因数分解:

$2^2\times 5^1\times {\mathrm{277}}^1\times {\mathrm{401}}^1$

素因数の和:687

約数の個数: 24

約数和(自身を含む): 4693752

約数和(自身を除く): 2472212

約数列:

[1, 2, 4, 5, 10, 20, 277, 401, 554, 802, 1108, 1385, 1604, 2005, 2770, 4010, 5540, 8020, 111077, 222154, 444308, 555385, 1110770, 2221540]

約数ペア:

[(1, 2221540), (2, 1110770), (4, 555385), (5, 444308), (10, 222154), (20, 111077), (277, 8020), (401, 5540), (554, 4010), (802, 2770), (1108, 2005), (1385, 1604)]