21090996

素因数分解:

$2^2\times 3^3\times {\mathrm{401}}^1\times {\mathrm{487}}^1$

素因数の和:901

約数の個数: 48

約数和(自身を含む): 54929280

約数和(自身を除く): 33838284

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 401, 487, 802, 974, 1203, 1461, 1604, 1948, 2406, 2922, 3609, 4383, 4812, 5844, 7218, 8766, 10827, 13149, 14436, 17532, 21654, 26298, 43308, 52596, 195287, 390574, 585861, 781148, 1171722, 1757583, 2343444, 3515166, 5272749, 7030332, 10545498, 21090996]

約数ペア:

[(1, 21090996), (2, 10545498), (3, 7030332), (4, 5272749), (6, 3515166), (9, 2343444), (12, 1757583), (18, 1171722), (27, 781148), (36, 585861), (54, 390574), (108, 195287), (401, 52596), (487, 43308), (802, 26298), (974, 21654), (1203, 17532), (1461, 14436), (1604, 13149), (1948, 10827), (2406, 8766), (2922, 7218), (3609, 5844), (4383, 4812)]