21641013

素因数分解:

$3^4\times {\mathrm{53}}^1\times {\mathrm{71}}^2$

素因数の和:207

約数の個数: 30

約数和(自身を含む): 33408342

約数和(自身を除く): 11767329

約数列:

[1, 3, 9, 27, 53, 71, 81, 159, 213, 477, 639, 1431, 1917, 3763, 4293, 5041, 5751, 11289, 15123, 33867, 45369, 101601, 136107, 267173, 304803, 408321, 801519, 2404557, 7213671, 21641013]

約数ペア:

[(1, 21641013), (3, 7213671), (9, 2404557), (27, 801519), (53, 408321), (71, 304803), (81, 267173), (159, 136107), (213, 101601), (477, 45369), (639, 33867), (1431, 15123), (1917, 11289), (3763, 5751), (4293, 5041)]