19908735

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{1567}}^1$

素因数の和:1604

約数の個数: 48

約数和(自身を含む): 40040448

約数和(自身を除く): 20131713

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 77, 105, 121, 165, 231, 363, 385, 605, 847, 1155, 1567, 1815, 2541, 4235, 4701, 7835, 10969, 12705, 17237, 23505, 32907, 51711, 54845, 86185, 120659, 164535, 189607, 258555, 361977, 568821, 603295, 948035, 1327249, 1809885, 2844105, 3981747, 6636245, 19908735]

約数ペア:

[(1, 19908735), (3, 6636245), (5, 3981747), (7, 2844105), (11, 1809885), (15, 1327249), (21, 948035), (33, 603295), (35, 568821), (55, 361977), (77, 258555), (105, 189607), (121, 164535), (165, 120659), (231, 86185), (363, 54845), (385, 51711), (605, 32907), (847, 23505), (1155, 17237), (1567, 12705), (1815, 10969), (2541, 7835), (4235, 4701)]