20809494

素因数分解:

$2^1\times 3^3\times {\mathrm{31}}^2\times {\mathrm{401}}^1$

素因数の和:474

約数の個数: 48

約数和(自身を含む): 47902320

約数和(自身を除く): 27092826

約数列:

[1, 2, 3, 6, 9, 18, 27, 31, 54, 62, 93, 186, 279, 401, 558, 802, 837, 961, 1203, 1674, 1922, 2406, 2883, 3609, 5766, 7218, 8649, 10827, 12431, 17298, 21654, 24862, 25947, 37293, 51894, 74586, 111879, 223758, 335637, 385361, 671274, 770722, 1156083, 2312166, 3468249, 6936498, 10404747, 20809494]

約数ペア:

[(1, 20809494), (2, 10404747), (3, 6936498), (6, 3468249), (9, 2312166), (18, 1156083), (27, 770722), (31, 671274), (54, 385361), (62, 335637), (93, 223758), (186, 111879), (279, 74586), (401, 51894), (558, 37293), (802, 25947), (837, 24862), (961, 21654), (1203, 17298), (1674, 12431), (1922, 10827), (2406, 8649), (2883, 7218), (3609, 5766)]