21535005

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{1069}}^1$

素因数の和:1173

約数の個数: 32

約数和(自身を含む): 36979200

約数和(自身を除く): 15444195

約数列:

[1, 3, 5, 15, 17, 51, 79, 85, 237, 255, 395, 1069, 1185, 1343, 3207, 4029, 5345, 6715, 16035, 18173, 20145, 54519, 84451, 90865, 253353, 272595, 422255, 1266765, 1435667, 4307001, 7178335, 21535005]

約数ペア:

[(1, 21535005), (3, 7178335), (5, 4307001), (15, 1435667), (17, 1266765), (51, 422255), (79, 272595), (85, 253353), (237, 90865), (255, 84451), (395, 54519), (1069, 20145), (1185, 18173), (1343, 16035), (3207, 6715), (4029, 5345)]