81241960

素因数分解:

$2^3\times 5^1\times {\mathrm{383}}^1\times {\mathrm{5303}}^1$

素因数の和:5697

約数の個数: 32

約数和(自身を含む): 183306240

約数和(自身を除く): 102064280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 383, 766, 1532, 1915, 3064, 3830, 5303, 7660, 10606, 15320, 21212, 26515, 42424, 53030, 106060, 212120, 2031049, 4062098, 8124196, 10155245, 16248392, 20310490, 40620980, 81241960]

約数ペア:

[(1, 81241960), (2, 40620980), (4, 20310490), (5, 16248392), (8, 10155245), (10, 8124196), (20, 4062098), (40, 2031049), (383, 212120), (766, 106060), (1532, 53030), (1915, 42424), (3064, 26515), (3830, 21212), (5303, 15320), (7660, 10606)]