2989890

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{239}}^1$

素因数の和:391

約数の個数: 48

約数和(自身を含む): 7862400

約数和(自身を除く): 4872510

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 139, 239, 278, 417, 478, 695, 717, 834, 1195, 1251, 1390, 1434, 2085, 2151, 2390, 2502, 3585, 4170, 4302, 6255, 7170, 10755, 12510, 21510, 33221, 66442, 99663, 166105, 199326, 298989, 332210, 498315, 597978, 996630, 1494945, 2989890]

約数ペア:

[(1, 2989890), (2, 1494945), (3, 996630), (5, 597978), (6, 498315), (9, 332210), (10, 298989), (15, 199326), (18, 166105), (30, 99663), (45, 66442), (90, 33221), (139, 21510), (239, 12510), (278, 10755), (417, 7170), (478, 6255), (695, 4302), (717, 4170), (834, 3585), (1195, 2502), (1251, 2390), (1390, 2151), (1434, 2085)]