87720525

素因数分解:

$3^2\times 5^2\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{257}}^1$

素因数の和:351

約数の個数: 72

約数和(自身を含む): 165942504

約数和(自身を除く): 78221979

約数列:

[1, 3, 5, 9, 15, 25, 37, 41, 45, 75, 111, 123, 185, 205, 225, 257, 333, 369, 555, 615, 771, 925, 1025, 1285, 1517, 1665, 1845, 2313, 2775, 3075, 3855, 4551, 6425, 7585, 8325, 9225, 9509, 10537, 11565, 13653, 19275, 22755, 28527, 31611, 37925, 47545, 52685, 57825, 68265, 85581, 94833, 113775, 142635, 158055, 237725, 263425, 341325, 389869, 427905, 474165, 713175, 790275, 1169607, 1949345, 2139525, 2370825, 3508821, 5848035, 9746725, 17544105, 29240175, 87720525]

約数ペア:

[(1, 87720525), (3, 29240175), (5, 17544105), (9, 9746725), (15, 5848035), (25, 3508821), (37, 2370825), (41, 2139525), (45, 1949345), (75, 1169607), (111, 790275), (123, 713175), (185, 474165), (205, 427905), (225, 389869), (257, 341325), (333, 263425), (369, 237725), (555, 158055), (615, 142635), (771, 113775), (925, 94833), (1025, 85581), (1285, 68265), (1517, 57825), (1665, 52685), (1845, 47545), (2313, 37925), (2775, 31611), (3075, 28527), (3855, 22755), (4551, 19275), (6425, 13653), (7585, 11565), (8325, 10537), (9225, 9509)]