21071880

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{179}}^1$

素因数の和:308

約数の個数: 128

約数和(自身を含む): 71280000

約数和(自身を除く): 50208120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 108, 109, 120, 135, 179, 180, 216, 218, 270, 327, 358, 360, 436, 537, 540, 545, 654, 716, 872, 895, 981, 1074, 1080, 1090, 1308, 1432, 1611, 1635, 1790, 1962, 2148, 2180, 2616, 2685, 2943, 3222, 3270, 3580, 3924, 4296, 4360, 4833, 4905, 5370, 5886, 6444, 6540, 7160, 7848, 8055, 9666, 9810, 10740, 11772, 12888, 13080, 14715, 16110, 19332, 19511, 19620, 21480, 23544, 24165, 29430, 32220, 38664, 39022, 39240, 48330, 58533, 58860, 64440, 78044, 96660, 97555, 117066, 117720, 156088, 175599, 193320, 195110, 234132, 292665, 351198, 390220, 468264, 526797, 585330, 702396, 780440, 877995, 1053594, 1170660, 1404792, 1755990, 2107188, 2341320, 2633985, 3511980, 4214376, 5267970, 7023960, 10535940, 21071880]

約数ペア:

[(1, 21071880), (2, 10535940), (3, 7023960), (4, 5267970), (5, 4214376), (6, 3511980), (8, 2633985), (9, 2341320), (10, 2107188), (12, 1755990), (15, 1404792), (18, 1170660), (20, 1053594), (24, 877995), (27, 780440), (30, 702396), (36, 585330), (40, 526797), (45, 468264), (54, 390220), (60, 351198), (72, 292665), (90, 234132), (108, 195110), (109, 193320), (120, 175599), (135, 156088), (179, 117720), (180, 117066), (216, 97555), (218, 96660), (270, 78044), (327, 64440), (358, 58860), (360, 58533), (436, 48330), (537, 39240), (540, 39022), (545, 38664), (654, 32220), (716, 29430), (872, 24165), (895, 23544), (981, 21480), (1074, 19620), (1080, 19511), (1090, 19332), (1308, 16110), (1432, 14715), (1611, 13080), (1635, 12888), (1790, 11772), (1962, 10740), (2148, 9810), (2180, 9666), (2616, 8055), (2685, 7848), (2943, 7160), (3222, 6540), (3270, 6444), (3580, 5886), (3924, 5370), (4296, 4905), (4360, 4833)]