21601107

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{283}}^1$

素因数の和:560

約数の個数: 32

約数和(自身を含む): 35170560

約数和(自身を除く): 13569453

約数列:

[1, 3, 9, 11, 27, 33, 99, 257, 283, 297, 771, 849, 2313, 2547, 2827, 3113, 6939, 7641, 8481, 9339, 25443, 28017, 72731, 76329, 84051, 218193, 654579, 800041, 1963737, 2400123, 7200369, 21601107]

約数ペア:

[(1, 21601107), (3, 7200369), (9, 2400123), (11, 1963737), (27, 800041), (33, 654579), (99, 218193), (257, 84051), (283, 76329), (297, 72731), (771, 28017), (849, 25443), (2313, 9339), (2547, 8481), (2827, 7641), (3113, 6939)]