21016590

素因数分解:

$2^1\times 3^1\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{29}}^2$

素因数の和:99

約数の個数: 144

約数和(自身を含む): 64342512

約数和(自身を除く): 43325922

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 17, 21, 29, 30, 34, 35, 42, 49, 51, 58, 70, 85, 87, 98, 102, 105, 119, 145, 147, 170, 174, 203, 210, 238, 245, 255, 290, 294, 357, 406, 435, 490, 493, 510, 595, 609, 714, 735, 833, 841, 870, 986, 1015, 1190, 1218, 1421, 1470, 1479, 1666, 1682, 1785, 2030, 2465, 2499, 2523, 2842, 2958, 3045, 3451, 3570, 4165, 4205, 4263, 4930, 4998, 5046, 5887, 6090, 6902, 7105, 7395, 8330, 8410, 8526, 10353, 11774, 12495, 12615, 14210, 14297, 14790, 17255, 17661, 20706, 21315, 24157, 24990, 25230, 28594, 29435, 34510, 35322, 41209, 42630, 42891, 48314, 51765, 58870, 71485, 72471, 82418, 85782, 88305, 100079, 103530, 120785, 123627, 142970, 144942, 176610, 200158, 206045, 214455, 241570, 247254, 300237, 362355, 412090, 428910, 500395, 600474, 618135, 700553, 724710, 1000790, 1236270, 1401106, 1501185, 2101659, 3002370, 3502765, 4203318, 7005530, 10508295, 21016590]

約数ペア:

[(1, 21016590), (2, 10508295), (3, 7005530), (5, 4203318), (6, 3502765), (7, 3002370), (10, 2101659), (14, 1501185), (15, 1401106), (17, 1236270), (21, 1000790), (29, 724710), (30, 700553), (34, 618135), (35, 600474), (42, 500395), (49, 428910), (51, 412090), (58, 362355), (70, 300237), (85, 247254), (87, 241570), (98, 214455), (102, 206045), (105, 200158), (119, 176610), (145, 144942), (147, 142970), (170, 123627), (174, 120785), (203, 103530), (210, 100079), (238, 88305), (245, 85782), (255, 82418), (290, 72471), (294, 71485), (357, 58870), (406, 51765), (435, 48314), (490, 42891), (493, 42630), (510, 41209), (595, 35322), (609, 34510), (714, 29435), (735, 28594), (833, 25230), (841, 24990), (870, 24157), (986, 21315), (1015, 20706), (1190, 17661), (1218, 17255), (1421, 14790), (1470, 14297), (1479, 14210), (1666, 12615), (1682, 12495), (1785, 11774), (2030, 10353), (2465, 8526), (2499, 8410), (2523, 8330), (2842, 7395), (2958, 7105), (3045, 6902), (3451, 6090), (3570, 5887), (4165, 5046), (4205, 4998), (4263, 4930)]