81715560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{251}}^1\times {\mathrm{2713}}^1$

素因数の和:2978

約数の個数: 64

約数和(自身を含む): 246214080

約数和(自身を除く): 164498520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 251, 502, 753, 1004, 1255, 1506, 2008, 2510, 2713, 3012, 3765, 5020, 5426, 6024, 7530, 8139, 10040, 10852, 13565, 15060, 16278, 21704, 27130, 30120, 32556, 40695, 54260, 65112, 81390, 108520, 162780, 325560, 680963, 1361926, 2042889, 2723852, 3404815, 4085778, 5447704, 6809630, 8171556, 10214445, 13619260, 16343112, 20428890, 27238520, 40857780, 81715560]

約数ペア:

[(1, 81715560), (2, 40857780), (3, 27238520), (4, 20428890), (5, 16343112), (6, 13619260), (8, 10214445), (10, 8171556), (12, 6809630), (15, 5447704), (20, 4085778), (24, 3404815), (30, 2723852), (40, 2042889), (60, 1361926), (120, 680963), (251, 325560), (502, 162780), (753, 108520), (1004, 81390), (1255, 65112), (1506, 54260), (2008, 40695), (2510, 32556), (2713, 30120), (3012, 27130), (3765, 21704), (5020, 16278), (5426, 15060), (6024, 13565), (7530, 10852), (8139, 10040)]