21480387481

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{1049821}}^1$

素因数の和:1049944

約数の個数: 16

約数和(自身を含む): 25531671040

約数和(自身を除く): 4051283559

約数列:

[1, 7, 37, 79, 259, 553, 2923, 20461, 1049821, 7348747, 38843377, 82935859, 271903639, 580551013, 3068626783, 21480387481]

約数ペア:

[(1, 21480387481), (7, 3068626783), (37, 580551013), (79, 271903639), (259, 82935859), (553, 38843377), (2923, 7348747), (20461, 1049821)]