278564

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{487}}^1$

素因数の和:515

約数の個数: 24

約数和(自身を含む): 573888

約数和(自身を除く): 295324

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 143, 286, 487, 572, 974, 1948, 5357, 6331, 10714, 12662, 21428, 25324, 69641, 139282, 278564]

約数ペア:

[(1, 278564), (2, 139282), (4, 69641), (11, 25324), (13, 21428), (22, 12662), (26, 10714), (44, 6331), (52, 5357), (143, 1948), (286, 974), (487, 572)]