991890

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{107}}^1$

素因数の和:223

約数の個数: 48

約数和(自身を含む): 2628288

約数和(自身を除く): 1636398

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 103, 107, 206, 214, 309, 321, 515, 535, 618, 642, 927, 963, 1030, 1070, 1545, 1605, 1854, 1926, 3090, 3210, 4635, 4815, 9270, 9630, 11021, 22042, 33063, 55105, 66126, 99189, 110210, 165315, 198378, 330630, 495945, 991890]

約数ペア:

[(1, 991890), (2, 495945), (3, 330630), (5, 198378), (6, 165315), (9, 110210), (10, 99189), (15, 66126), (18, 55105), (30, 33063), (45, 22042), (90, 11021), (103, 9630), (107, 9270), (206, 4815), (214, 4635), (309, 3210), (321, 3090), (515, 1926), (535, 1854), (618, 1605), (642, 1545), (927, 1070), (963, 1030)]