81664443

素因数分解:

$3^4\times 7^1\times {\mathrm{73}}^1\times {\mathrm{1973}}^1$

素因数の和:2065

約数の個数: 40

約数和(自身を含む): 141401568

約数和(自身を除く): 59737125

約数列:

[1, 3, 7, 9, 21, 27, 63, 73, 81, 189, 219, 511, 567, 657, 1533, 1971, 1973, 4599, 5913, 5919, 13797, 13811, 17757, 41391, 41433, 53271, 124299, 144029, 159813, 372897, 432087, 1008203, 1118691, 1296261, 3024609, 3888783, 9073827, 11666349, 27221481, 81664443]

約数ペア:

[(1, 81664443), (3, 27221481), (7, 11666349), (9, 9073827), (21, 3888783), (27, 3024609), (63, 1296261), (73, 1118691), (81, 1008203), (189, 432087), (219, 372897), (511, 159813), (567, 144029), (657, 124299), (1533, 53271), (1971, 41433), (1973, 41391), (4599, 17757), (5913, 13811), (5919, 13797)]