21353463

素因数分解:

$3^4\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1$

素因数の和:209

約数の個数: 40

約数和(自身を含む): 33454080

約数和(自身を除く): 12100617

約数列:

[1, 3, 9, 27, 47, 71, 79, 81, 141, 213, 237, 423, 639, 711, 1269, 1917, 2133, 3337, 3713, 3807, 5609, 5751, 6399, 10011, 11139, 16827, 30033, 33417, 50481, 90099, 100251, 151443, 263623, 270297, 300753, 454329, 790869, 2372607, 7117821, 21353463]

約数ペア:

[(1, 21353463), (3, 7117821), (9, 2372607), (27, 790869), (47, 454329), (71, 300753), (79, 270297), (81, 263623), (141, 151443), (213, 100251), (237, 90099), (423, 50481), (639, 33417), (711, 30033), (1269, 16827), (1917, 11139), (2133, 10011), (3337, 6399), (3713, 5751), (3807, 5609)]