20402415

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{1249}}^1$

素因数の和:1285

約数の個数: 48

約数和(自身を含む): 39900000

約数和(自身を除く): 19497585

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 99, 121, 135, 165, 297, 363, 495, 605, 1089, 1249, 1485, 1815, 3267, 3747, 5445, 6245, 11241, 13739, 16335, 18735, 33723, 41217, 56205, 68695, 123651, 151129, 168615, 206085, 370953, 453387, 618255, 755645, 1360161, 1854765, 2266935, 4080483, 6800805, 20402415]

約数ペア:

[(1, 20402415), (3, 6800805), (5, 4080483), (9, 2266935), (11, 1854765), (15, 1360161), (27, 755645), (33, 618255), (45, 453387), (55, 370953), (99, 206085), (121, 168615), (135, 151129), (165, 123651), (297, 68695), (363, 56205), (495, 41217), (605, 33723), (1089, 18735), (1249, 16335), (1485, 13739), (1815, 11241), (3267, 6245), (3747, 5445)]