78487980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{76949}}^1$

素因数の和:76978

約数の個数: 48

約数和(自身を含む): 232696800

約数和(自身を除く): 154208820

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 76949, 153898, 230847, 307796, 384745, 461694, 769490, 923388, 1154235, 1308133, 1538980, 2308470, 2616266, 3924399, 4616940, 5232532, 6540665, 7848798, 13081330, 15697596, 19621995, 26162660, 39243990, 78487980]

約数ペア:

[(1, 78487980), (2, 39243990), (3, 26162660), (4, 19621995), (5, 15697596), (6, 13081330), (10, 7848798), (12, 6540665), (15, 5232532), (17, 4616940), (20, 3924399), (30, 2616266), (34, 2308470), (51, 1538980), (60, 1308133), (68, 1154235), (85, 923388), (102, 769490), (170, 461694), (204, 384745), (255, 307796), (340, 230847), (510, 153898), (1020, 76949)]