812406420

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{644767}}^1$

素因数の和:644789

約数の個数: 72

約数和(自身を含む): 2816346624

約数和(自身を除く): 2003940204

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 644767, 1289534, 1934301, 2579068, 3223835, 3868602, 4513369, 5802903, 6447670, 7737204, 9026738, 9671505, 11605806, 12895340, 13540107, 18053476, 19343010, 22566845, 23211612, 27080214, 29014515, 38686020, 40620321, 45133690, 54160428, 58029030, 67700535, 81240642, 90267380, 116058060, 135401070, 162481284, 203101605, 270802140, 406203210, 812406420]

約数ペア:

[(1, 812406420), (2, 406203210), (3, 270802140), (4, 203101605), (5, 162481284), (6, 135401070), (7, 116058060), (9, 90267380), (10, 81240642), (12, 67700535), (14, 58029030), (15, 54160428), (18, 45133690), (20, 40620321), (21, 38686020), (28, 29014515), (30, 27080214), (35, 23211612), (36, 22566845), (42, 19343010), (45, 18053476), (60, 13540107), (63, 12895340), (70, 11605806), (84, 9671505), (90, 9026738), (105, 7737204), (126, 6447670), (140, 5802903), (180, 4513369), (210, 3868602), (252, 3223835), (315, 2579068), (420, 1934301), (630, 1289534), (1260, 644767)]