851220540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{263}}^1\times {\mathrm{17981}}^1$

素因数の和:18259

約数の個数: 72

約数和(自身を含む): 2591997408

約数和(自身を除く): 1740776868

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 263, 526, 789, 1052, 1315, 1578, 2367, 2630, 3156, 3945, 4734, 5260, 7890, 9468, 11835, 15780, 17981, 23670, 35962, 47340, 53943, 71924, 89905, 107886, 161829, 179810, 215772, 269715, 323658, 359620, 539430, 647316, 809145, 1078860, 1618290, 3236580, 4729003, 9458006, 14187009, 18916012, 23645015, 28374018, 42561027, 47290030, 56748036, 70935045, 85122054, 94580060, 141870090, 170244108, 212805135, 283740180, 425610270, 851220540]

約数ペア:

[(1, 851220540), (2, 425610270), (3, 283740180), (4, 212805135), (5, 170244108), (6, 141870090), (9, 94580060), (10, 85122054), (12, 70935045), (15, 56748036), (18, 47290030), (20, 42561027), (30, 28374018), (36, 23645015), (45, 18916012), (60, 14187009), (90, 9458006), (180, 4729003), (263, 3236580), (526, 1618290), (789, 1078860), (1052, 809145), (1315, 647316), (1578, 539430), (2367, 359620), (2630, 323658), (3156, 269715), (3945, 215772), (4734, 179810), (5260, 161829), (7890, 107886), (9468, 89905), (11835, 71924), (15780, 53943), (17981, 47340), (23670, 35962)]