21540870

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2$

素因数の和:84

約数の個数: 192

約数和(自身を含む): 69128640

約数和(自身を除く): 47587770

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 17, 18, 19, 26, 27, 30, 34, 38, 39, 45, 51, 54, 57, 65, 78, 85, 90, 95, 102, 114, 117, 130, 135, 153, 170, 171, 190, 195, 221, 234, 247, 255, 270, 285, 306, 323, 342, 351, 361, 390, 442, 459, 494, 510, 513, 570, 585, 646, 663, 702, 722, 741, 765, 855, 918, 969, 1026, 1083, 1105, 1170, 1235, 1326, 1482, 1530, 1615, 1710, 1755, 1805, 1938, 1989, 2166, 2210, 2223, 2295, 2470, 2565, 2907, 3230, 3249, 3315, 3510, 3610, 3705, 3978, 4199, 4446, 4590, 4693, 4845, 5130, 5415, 5814, 5967, 6137, 6498, 6630, 6669, 7410, 8398, 8721, 9386, 9690, 9747, 9945, 10830, 11115, 11934, 12274, 12597, 13338, 14079, 14535, 16245, 17442, 18411, 19494, 19890, 20995, 22230, 23465, 25194, 28158, 29070, 29835, 30685, 32490, 33345, 36822, 37791, 41990, 42237, 43605, 46930, 48735, 55233, 59670, 61370, 62985, 66690, 70395, 75582, 79781, 84474, 87210, 92055, 97470, 110466, 113373, 125970, 126711, 140790, 159562, 165699, 184110, 188955, 211185, 226746, 239343, 253422, 276165, 331398, 377910, 398905, 422370, 478686, 552330, 566865, 633555, 718029, 797810, 828495, 1133730, 1196715, 1267110, 1436058, 1656990, 2154087, 2393430, 3590145, 4308174, 7180290, 10770435, 21540870]

約数ペア:

[(1, 21540870), (2, 10770435), (3, 7180290), (5, 4308174), (6, 3590145), (9, 2393430), (10, 2154087), (13, 1656990), (15, 1436058), (17, 1267110), (18, 1196715), (19, 1133730), (26, 828495), (27, 797810), (30, 718029), (34, 633555), (38, 566865), (39, 552330), (45, 478686), (51, 422370), (54, 398905), (57, 377910), (65, 331398), (78, 276165), (85, 253422), (90, 239343), (95, 226746), (102, 211185), (114, 188955), (117, 184110), (130, 165699), (135, 159562), (153, 140790), (170, 126711), (171, 125970), (190, 113373), (195, 110466), (221, 97470), (234, 92055), (247, 87210), (255, 84474), (270, 79781), (285, 75582), (306, 70395), (323, 66690), (342, 62985), (351, 61370), (361, 59670), (390, 55233), (442, 48735), (459, 46930), (494, 43605), (510, 42237), (513, 41990), (570, 37791), (585, 36822), (646, 33345), (663, 32490), (702, 30685), (722, 29835), (741, 29070), (765, 28158), (855, 25194), (918, 23465), (969, 22230), (1026, 20995), (1083, 19890), (1105, 19494), (1170, 18411), (1235, 17442), (1326, 16245), (1482, 14535), (1530, 14079), (1615, 13338), (1710, 12597), (1755, 12274), (1805, 11934), (1938, 11115), (1989, 10830), (2166, 9945), (2210, 9747), (2223, 9690), (2295, 9386), (2470, 8721), (2565, 8398), (2907, 7410), (3230, 6669), (3249, 6630), (3315, 6498), (3510, 6137), (3610, 5967), (3705, 5814), (3978, 5415), (4199, 5130), (4446, 4845), (4590, 4693)]