820845

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1$

素因数の和:94

約数の個数: 48

約数和(自身を含む): 1600560

約数和(自身を除く): 779715

約数列:

[1, 3, 5, 9, 15, 17, 29, 37, 45, 51, 85, 87, 111, 145, 153, 185, 255, 261, 333, 435, 493, 555, 629, 765, 1073, 1305, 1479, 1665, 1887, 2465, 3145, 3219, 4437, 5365, 5661, 7395, 9435, 9657, 16095, 18241, 22185, 28305, 48285, 54723, 91205, 164169, 273615, 820845]

約数ペア:

[(1, 820845), (3, 273615), (5, 164169), (9, 91205), (15, 54723), (17, 48285), (29, 28305), (37, 22185), (45, 18241), (51, 16095), (85, 9657), (87, 9435), (111, 7395), (145, 5661), (153, 5365), (185, 4437), (255, 3219), (261, 3145), (333, 2465), (435, 1887), (493, 1665), (555, 1479), (629, 1305), (765, 1073)]