19620513

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{419}}^1$

素因数の和:490

約数の個数: 36

約数和(自身を含む): 31951920

約数和(自身を除く): 12331407

約数列:

[1, 3, 9, 11, 33, 43, 99, 121, 129, 363, 387, 419, 473, 1089, 1257, 1419, 3771, 4257, 4609, 5203, 13827, 15609, 18017, 41481, 46827, 50699, 54051, 152097, 162153, 198187, 456291, 594561, 1783683, 2180057, 6540171, 19620513]

約数ペア:

[(1, 19620513), (3, 6540171), (9, 2180057), (11, 1783683), (33, 594561), (43, 456291), (99, 198187), (121, 162153), (129, 152097), (363, 54051), (387, 50699), (419, 46827), (473, 41481), (1089, 18017), (1257, 15609), (1419, 13827), (3771, 5203), (4257, 4609)]