16981293

素因数分解:

$3^1\times 7^2\times {\mathrm{331}}^1\times {\mathrm{349}}^1$

素因数の和:697

約数の個数: 24

約数和(自身を含む): 26493600

約数和(自身を除く): 9512307

約数列:

[1, 3, 7, 21, 49, 147, 331, 349, 993, 1047, 2317, 2443, 6951, 7329, 16219, 17101, 48657, 51303, 115519, 346557, 808633, 2425899, 5660431, 16981293]

約数ペア:

[(1, 16981293), (3, 5660431), (7, 2425899), (21, 808633), (49, 346557), (147, 115519), (331, 51303), (349, 48657), (993, 17101), (1047, 16219), (2317, 7329), (2443, 6951)]