205519120

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{349}}^1\times {\mathrm{433}}^1$

素因数の和:812

約数の個数: 80

約数和(自身を含む): 508561200

約数和(自身を除く): 303042080

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 349, 433, 680, 698, 866, 1360, 1396, 1732, 1745, 2165, 2792, 3464, 3490, 4330, 5584, 5933, 6928, 6980, 7361, 8660, 11866, 13960, 14722, 17320, 23732, 27920, 29444, 29665, 34640, 36805, 47464, 58888, 59330, 73610, 94928, 117776, 118660, 147220, 151117, 237320, 294440, 302234, 474640, 588880, 604468, 755585, 1208936, 1511170, 2417872, 2568989, 3022340, 5137978, 6044680, 10275956, 12089360, 12844945, 20551912, 25689890, 41103824, 51379780, 102759560, 205519120]

約数ペア:

[(1, 205519120), (2, 102759560), (4, 51379780), (5, 41103824), (8, 25689890), (10, 20551912), (16, 12844945), (17, 12089360), (20, 10275956), (34, 6044680), (40, 5137978), (68, 3022340), (80, 2568989), (85, 2417872), (136, 1511170), (170, 1208936), (272, 755585), (340, 604468), (349, 588880), (433, 474640), (680, 302234), (698, 294440), (866, 237320), (1360, 151117), (1396, 147220), (1732, 118660), (1745, 117776), (2165, 94928), (2792, 73610), (3464, 59330), (3490, 58888), (4330, 47464), (5584, 36805), (5933, 34640), (6928, 29665), (6980, 29444), (7361, 27920), (8660, 23732), (11866, 17320), (13960, 14722)]