209905280

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{25229}}^1$

素因数の和:25261

約数の個数: 64

約数和(自身を含む): 540426600

約数和(自身を除く): 330521320

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 260, 320, 416, 520, 640, 832, 1040, 1664, 2080, 4160, 8320, 25229, 50458, 100916, 126145, 201832, 252290, 327977, 403664, 504580, 655954, 807328, 1009160, 1311908, 1614656, 1639885, 2018320, 2623816, 3229312, 3279770, 4036640, 5247632, 6559540, 8073280, 10495264, 13119080, 16146560, 20990528, 26238160, 41981056, 52476320, 104952640, 209905280]

約数ペア:

[(1, 209905280), (2, 104952640), (4, 52476320), (5, 41981056), (8, 26238160), (10, 20990528), (13, 16146560), (16, 13119080), (20, 10495264), (26, 8073280), (32, 6559540), (40, 5247632), (52, 4036640), (64, 3279770), (65, 3229312), (80, 2623816), (104, 2018320), (128, 1639885), (130, 1614656), (160, 1311908), (208, 1009160), (260, 807328), (320, 655954), (416, 504580), (520, 403664), (640, 327977), (832, 252290), (1040, 201832), (1664, 126145), (2080, 100916), (4160, 50458), (8320, 25229)]