209315985

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{401}}^1$

素因数の和:538

約数の個数: 64

約数和(自身を含む): 375114240

約数和(自身を除く): 165798255

約数列:

[1, 3, 5, 15, 17, 23, 51, 69, 85, 89, 115, 255, 267, 345, 391, 401, 445, 1173, 1203, 1335, 1513, 1955, 2005, 2047, 4539, 5865, 6015, 6141, 6817, 7565, 9223, 10235, 20451, 22695, 27669, 30705, 34085, 34799, 35689, 46115, 102255, 104397, 107067, 138345, 156791, 173995, 178445, 470373, 521985, 535335, 606713, 783955, 820847, 1820139, 2351865, 2462541, 3033565, 4104235, 9100695, 12312705, 13954399, 41863197, 69771995, 209315985]

約数ペア:

[(1, 209315985), (3, 69771995), (5, 41863197), (15, 13954399), (17, 12312705), (23, 9100695), (51, 4104235), (69, 3033565), (85, 2462541), (89, 2351865), (115, 1820139), (255, 820847), (267, 783955), (345, 606713), (391, 535335), (401, 521985), (445, 470373), (1173, 178445), (1203, 173995), (1335, 156791), (1513, 138345), (1955, 107067), (2005, 104397), (2047, 102255), (4539, 46115), (5865, 35689), (6015, 34799), (6141, 34085), (6817, 30705), (7565, 27669), (9223, 22695), (10235, 20451)]