1285288420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4943417}}^1$

素因数の和:4943439

約数の個数: 24

約数和(自身を含む): 2906729784

約数和(自身を除く): 1621441364

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 4943417, 9886834, 19773668, 24717085, 49434170, 64264421, 98868340, 128528842, 257057684, 321322105, 642644210, 1285288420]

約数ペア:

[(1, 1285288420), (2, 642644210), (4, 321322105), (5, 257057684), (10, 128528842), (13, 98868340), (20, 64264421), (26, 49434170), (52, 24717085), (65, 19773668), (130, 9886834), (260, 4943417)]