16397409

素因数分解:

$3^1\times 7^2\times {\mathrm{331}}^1\times {\mathrm{337}}^1$

素因数の和:685

約数の個数: 24

約数和(自身を含む): 25585248

約数和(自身を除く): 9187839

約数列:

[1, 3, 7, 21, 49, 147, 331, 337, 993, 1011, 2317, 2359, 6951, 7077, 16219, 16513, 48657, 49539, 111547, 334641, 780829, 2342487, 5465803, 16397409]

約数ペア:

[(1, 16397409), (3, 5465803), (7, 2342487), (21, 780829), (49, 334641), (147, 111547), (331, 49539), (337, 48657), (993, 16513), (1011, 16219), (2317, 7077), (2359, 6951)]