21455071

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^3\times {\mathrm{397}}^1$

素因数の和:459

約数の個数: 16

約数和(自身を含む): 24930720

約数和(自身を除く): 3475649

約数列:

[1, 11, 17, 187, 289, 397, 3179, 4367, 4913, 6749, 54043, 74239, 114733, 1262063, 1950461, 21455071]

約数ペア:

[(1, 21455071), (11, 1950461), (17, 1262063), (187, 114733), (289, 74239), (397, 54043), (3179, 6749), (4367, 4913)]