21395313

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{263}}^1$

素因数の和:426

約数の個数: 32

約数和(自身を含む): 33454080

約数和(自身を除く): 12058767

約数列:

[1, 3, 9, 23, 27, 69, 131, 207, 263, 393, 621, 789, 1179, 2367, 3013, 3537, 6049, 7101, 9039, 18147, 27117, 34453, 54441, 81351, 103359, 163323, 310077, 792419, 930231, 2377257, 7131771, 21395313]

約数ペア:

[(1, 21395313), (3, 7131771), (9, 2377257), (23, 930231), (27, 792419), (69, 310077), (131, 163323), (207, 103359), (263, 81351), (393, 54441), (621, 34453), (789, 27117), (1179, 18147), (2367, 9039), (3013, 7101), (3537, 6049)]