21082100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{16217}}^1$

素因数の和:16244

約数の個数: 36

約数和(自身を含む): 49270284

約数和(自身を除く): 28188184

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 650, 1300, 16217, 32434, 64868, 81085, 162170, 210821, 324340, 405425, 421642, 810850, 843284, 1054105, 1621700, 2108210, 4216420, 5270525, 10541050, 21082100]

約数ペア:

[(1, 21082100), (2, 10541050), (4, 5270525), (5, 4216420), (10, 2108210), (13, 1621700), (20, 1054105), (25, 843284), (26, 810850), (50, 421642), (52, 405425), (65, 324340), (100, 210821), (130, 162170), (260, 81085), (325, 64868), (650, 32434), (1300, 16217)]