20737395

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{1531}}^1$

素因数の和:1592

約数の個数: 48

約数和(自身を含む): 42062592

約数和(自身を除く): 21325197

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 43, 45, 63, 105, 129, 215, 301, 315, 387, 645, 903, 1505, 1531, 1935, 2709, 4515, 4593, 7655, 10717, 13545, 13779, 22965, 32151, 53585, 65833, 68895, 96453, 160755, 197499, 329165, 460831, 482265, 592497, 987495, 1382493, 2304155, 2962485, 4147479, 6912465, 20737395]

約数ペア:

[(1, 20737395), (3, 6912465), (5, 4147479), (7, 2962485), (9, 2304155), (15, 1382493), (21, 987495), (35, 592497), (43, 482265), (45, 460831), (63, 329165), (105, 197499), (129, 160755), (215, 96453), (301, 68895), (315, 65833), (387, 53585), (645, 32151), (903, 22965), (1505, 13779), (1531, 13545), (1935, 10717), (2709, 7655), (4515, 4593)]