20783565

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^3\times {\mathrm{347}}^1$

素因数の和:391

約数の個数: 48

約数和(自身を含む): 39738816

約数和(自身を除く): 18955251

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 121, 165, 347, 363, 495, 605, 1041, 1089, 1331, 1735, 1815, 3123, 3817, 3993, 5205, 5445, 6655, 11451, 11979, 15615, 19085, 19965, 34353, 41987, 57255, 59895, 125961, 171765, 209935, 377883, 461857, 629805, 1385571, 1889415, 2309285, 4156713, 6927855, 20783565]

約数ペア:

[(1, 20783565), (3, 6927855), (5, 4156713), (9, 2309285), (11, 1889415), (15, 1385571), (33, 629805), (45, 461857), (55, 377883), (99, 209935), (121, 171765), (165, 125961), (347, 59895), (363, 57255), (495, 41987), (605, 34353), (1041, 19965), (1089, 19085), (1331, 15615), (1735, 11979), (1815, 11451), (3123, 6655), (3817, 5445), (3993, 5205)]