280430878

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{233}}^1\times {\mathrm{389}}^1$

素因数の和:661

約数の個数: 64

約数和(自身を含む): 551940480

約数和(自身を除く): 271509602

約数列:

[1, 2, 7, 13, 14, 17, 26, 34, 91, 119, 182, 221, 233, 238, 389, 442, 466, 778, 1547, 1631, 2723, 3029, 3094, 3262, 3961, 5057, 5446, 6058, 6613, 7922, 10114, 13226, 21203, 27727, 35399, 42406, 46291, 51493, 55454, 70798, 85969, 90637, 92582, 102986, 171938, 181274, 360451, 601783, 634459, 720902, 1178281, 1203566, 1268918, 1540829, 2356562, 3081658, 8247967, 10785803, 16495934, 20030777, 21571606, 40061554, 140215439, 280430878]

約数ペア:

[(1, 280430878), (2, 140215439), (7, 40061554), (13, 21571606), (14, 20030777), (17, 16495934), (26, 10785803), (34, 8247967), (91, 3081658), (119, 2356562), (182, 1540829), (221, 1268918), (233, 1203566), (238, 1178281), (389, 720902), (442, 634459), (466, 601783), (778, 360451), (1547, 181274), (1631, 171938), (2723, 102986), (3029, 92582), (3094, 90637), (3262, 85969), (3961, 70798), (5057, 55454), (5446, 51493), (6058, 46291), (6613, 42406), (7922, 35399), (10114, 27727), (13226, 21203)]