20555451

素因数分解:

$3^4\times 7^2\times {\mathrm{5179}}^1$

素因数の和:5205

約数の個数: 30

約数和(自身を含む): 35726460

約数和(自身を除く): 15171009

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 441, 567, 1323, 3969, 5179, 15537, 36253, 46611, 108759, 139833, 253771, 326277, 419499, 761313, 978831, 2283939, 2936493, 6851817, 20555451]

約数ペア:

[(1, 20555451), (3, 6851817), (7, 2936493), (9, 2283939), (21, 978831), (27, 761313), (49, 419499), (63, 326277), (81, 253771), (147, 139833), (189, 108759), (441, 46611), (567, 36253), (1323, 15537), (3969, 5179)]