21330393

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{401}}^1$

素因数の和:577

約数の個数: 32

約数和(自身を含む): 34732800

約数和(自身を除く): 13402407

約数列:

[1, 3, 7, 17, 21, 51, 119, 149, 357, 401, 447, 1043, 1203, 2533, 2807, 3129, 6817, 7599, 8421, 17731, 20451, 47719, 53193, 59749, 143157, 179247, 418243, 1015733, 1254729, 3047199, 7110131, 21330393]

約数ペア:

[(1, 21330393), (3, 7110131), (7, 3047199), (17, 1254729), (21, 1015733), (51, 418243), (119, 179247), (149, 143157), (357, 59749), (401, 53193), (447, 47719), (1043, 20451), (1203, 17731), (2533, 8421), (2807, 7599), (3129, 6817)]