221418180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{28607}}^1$

素因数の和:28665

約数の個数: 72

約数和(自身を含む): 687278592

約数和(自身を除く): 465860412

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 43, 45, 60, 86, 90, 129, 172, 180, 215, 258, 387, 430, 516, 645, 774, 860, 1290, 1548, 1935, 2580, 3870, 7740, 28607, 57214, 85821, 114428, 143035, 171642, 257463, 286070, 343284, 429105, 514926, 572140, 858210, 1029852, 1230101, 1287315, 1716420, 2460202, 2574630, 3690303, 4920404, 5149260, 6150505, 7380606, 11070909, 12301010, 14761212, 18451515, 22141818, 24602020, 36903030, 44283636, 55354545, 73806060, 110709090, 221418180]

約数ペア:

[(1, 221418180), (2, 110709090), (3, 73806060), (4, 55354545), (5, 44283636), (6, 36903030), (9, 24602020), (10, 22141818), (12, 18451515), (15, 14761212), (18, 12301010), (20, 11070909), (30, 7380606), (36, 6150505), (43, 5149260), (45, 4920404), (60, 3690303), (86, 2574630), (90, 2460202), (129, 1716420), (172, 1287315), (180, 1230101), (215, 1029852), (258, 858210), (387, 572140), (430, 514926), (516, 429105), (645, 343284), (774, 286070), (860, 257463), (1290, 171642), (1548, 143035), (1935, 114428), (2580, 85821), (3870, 57214), (7740, 28607)]