21120670

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{229}}^1\times {\mathrm{401}}^1$

素因数の和:660

約数の個数: 32

約数和(自身を含む): 39942720

約数和(自身を除く): 18822050

約数列:

[1, 2, 5, 10, 23, 46, 115, 229, 230, 401, 458, 802, 1145, 2005, 2290, 4010, 5267, 9223, 10534, 18446, 26335, 46115, 52670, 91829, 92230, 183658, 459145, 918290, 2112067, 4224134, 10560335, 21120670]

約数ペア:

[(1, 21120670), (2, 10560335), (5, 4224134), (10, 2112067), (23, 918290), (46, 459145), (115, 183658), (229, 92230), (230, 91829), (401, 52670), (458, 46115), (802, 26335), (1145, 18446), (2005, 10534), (2290, 9223), (4010, 5267)]