78819980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{6691}}^1$

素因数の和:6750

約数の個数: 48

約数和(自身を含む): 179880960

約数和(自身を除く): 101060980

約数列:

[1, 2, 4, 5, 10, 19, 20, 31, 38, 62, 76, 95, 124, 155, 190, 310, 380, 589, 620, 1178, 2356, 2945, 5890, 6691, 11780, 13382, 26764, 33455, 66910, 127129, 133820, 207421, 254258, 414842, 508516, 635645, 829684, 1037105, 1271290, 2074210, 2542580, 3940999, 4148420, 7881998, 15763996, 19704995, 39409990, 78819980]

約数ペア:

[(1, 78819980), (2, 39409990), (4, 19704995), (5, 15763996), (10, 7881998), (19, 4148420), (20, 3940999), (31, 2542580), (38, 2074210), (62, 1271290), (76, 1037105), (95, 829684), (124, 635645), (155, 508516), (190, 414842), (310, 254258), (380, 207421), (589, 133820), (620, 127129), (1178, 66910), (2356, 33455), (2945, 26764), (5890, 13382), (6691, 11780)]