19693804

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{643}}^1$

素因数の和:710

約数の個数: 48

約数和(自身を含む): 40391680

約数和(自身を除く): 20697876

約数列:

[1, 2, 4, 13, 19, 26, 31, 38, 52, 62, 76, 124, 247, 403, 494, 589, 643, 806, 988, 1178, 1286, 1612, 2356, 2572, 7657, 8359, 12217, 15314, 16718, 19933, 24434, 30628, 33436, 39866, 48868, 79732, 158821, 259129, 317642, 378727, 518258, 635284, 757454, 1036516, 1514908, 4923451, 9846902, 19693804]

約数ペア:

[(1, 19693804), (2, 9846902), (4, 4923451), (13, 1514908), (19, 1036516), (26, 757454), (31, 635284), (38, 518258), (52, 378727), (62, 317642), (76, 259129), (124, 158821), (247, 79732), (403, 48868), (494, 39866), (589, 33436), (643, 30628), (806, 24434), (988, 19933), (1178, 16718), (1286, 15314), (1612, 12217), (2356, 8359), (2572, 7657)]