21857381280

素因数分解:

$2^5\times 3^3\times 5^1\times 7^1\times {\mathrm{722797}}^1$

素因数の和:722828

約数の個数: 192

約数和(自身を含む): 87429646080

約数和(自身を除く): 65572264800

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 32, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 84, 90, 96, 105, 108, 112, 120, 126, 135, 140, 144, 160, 168, 180, 189, 210, 216, 224, 240, 252, 270, 280, 288, 315, 336, 360, 378, 420, 432, 480, 504, 540, 560, 630, 672, 720, 756, 840, 864, 945, 1008, 1080, 1120, 1260, 1440, 1512, 1680, 1890, 2016, 2160, 2520, 3024, 3360, 3780, 4320, 5040, 6048, 7560, 10080, 15120, 30240, 722797, 1445594, 2168391, 2891188, 3613985, 4336782, 5059579, 5782376, 6505173, 7227970, 8673564, 10119158, 10841955, 11564752, 13010346, 14455940, 15178737, 17347128, 19515519, 20238316, 21683910, 23129504, 25297895, 26020692, 28911880, 30357474, 32525865, 34694256, 39031038, 40476632, 43367820, 45536211, 50595790, 52041384, 57823760, 60714948, 65051730, 69388512, 75893685, 78062076, 80953264, 86735640, 91072422, 97577595, 101191580, 104082768, 115647520, 121429896, 130103460, 136608633, 151787370, 156124152, 161906528, 173471280, 182144844, 195155190, 202383160, 208165536, 227681055, 242859792, 260206920, 273217266, 303574740, 312248304, 346942560, 364289688, 390310380, 404766320, 455362110, 485719584, 520413840, 546434532, 607149480, 624496608, 683043165, 728579376, 780620760, 809532640, 910724220, 1040827680, 1092869064, 1214298960, 1366086330, 1457158752, 1561241520, 1821448440, 2185738128, 2428597920, 2732172660, 3122483040, 3642896880, 4371476256, 5464345320, 7285793760, 10928690640, 21857381280]

約数ペア:

[(1, 21857381280), (2, 10928690640), (3, 7285793760), (4, 5464345320), (5, 4371476256), (6, 3642896880), (7, 3122483040), (8, 2732172660), (9, 2428597920), (10, 2185738128), (12, 1821448440), (14, 1561241520), (15, 1457158752), (16, 1366086330), (18, 1214298960), (20, 1092869064), (21, 1040827680), (24, 910724220), (27, 809532640), (28, 780620760), (30, 728579376), (32, 683043165), (35, 624496608), (36, 607149480), (40, 546434532), (42, 520413840), (45, 485719584), (48, 455362110), (54, 404766320), (56, 390310380), (60, 364289688), (63, 346942560), (70, 312248304), (72, 303574740), (80, 273217266), (84, 260206920), (90, 242859792), (96, 227681055), (105, 208165536), (108, 202383160), (112, 195155190), (120, 182144844), (126, 173471280), (135, 161906528), (140, 156124152), (144, 151787370), (160, 136608633), (168, 130103460), (180, 121429896), (189, 115647520), (210, 104082768), (216, 101191580), (224, 97577595), (240, 91072422), (252, 86735640), (270, 80953264), (280, 78062076), (288, 75893685), (315, 69388512), (336, 65051730), (360, 60714948), (378, 57823760), (420, 52041384), (432, 50595790), (480, 45536211), (504, 43367820), (540, 40476632), (560, 39031038), (630, 34694256), (672, 32525865), (720, 30357474), (756, 28911880), (840, 26020692), (864, 25297895), (945, 23129504), (1008, 21683910), (1080, 20238316), (1120, 19515519), (1260, 17347128), (1440, 15178737), (1512, 14455940), (1680, 13010346), (1890, 11564752), (2016, 10841955), (2160, 10119158), (2520, 8673564), (3024, 7227970), (3360, 6505173), (3780, 5782376), (4320, 5059579), (5040, 4336782), (6048, 3613985), (7560, 2891188), (10080, 2168391), (15120, 1445594), (30240, 722797)]