1388660

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{109}}^1$

素因数の和:145

約数の個数: 72

約数和(自身を含む): 3686760

約数和(自身を除く): 2298100

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 109, 130, 140, 182, 196, 218, 245, 260, 364, 436, 455, 490, 545, 637, 763, 910, 980, 1090, 1274, 1417, 1526, 1820, 2180, 2548, 2834, 3052, 3185, 3815, 5341, 5668, 6370, 7085, 7630, 9919, 10682, 12740, 14170, 15260, 19838, 21364, 26705, 28340, 39676, 49595, 53410, 69433, 99190, 106820, 138866, 198380, 277732, 347165, 694330, 1388660]

約数ペア:

[(1, 1388660), (2, 694330), (4, 347165), (5, 277732), (7, 198380), (10, 138866), (13, 106820), (14, 99190), (20, 69433), (26, 53410), (28, 49595), (35, 39676), (49, 28340), (52, 26705), (65, 21364), (70, 19838), (91, 15260), (98, 14170), (109, 12740), (130, 10682), (140, 9919), (182, 7630), (196, 7085), (218, 6370), (245, 5668), (260, 5341), (364, 3815), (436, 3185), (455, 3052), (490, 2834), (545, 2548), (637, 2180), (763, 1820), (910, 1526), (980, 1417), (1090, 1274)]