261081520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{3671}}^1$

素因数の和:3818

約数の個数: 80

約数和(自身を含む): 699383808

約数和(自身を除く): 438302288

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 127, 140, 254, 280, 508, 560, 635, 889, 1016, 1270, 1778, 2032, 2540, 3556, 3671, 4445, 5080, 7112, 7342, 8890, 10160, 14224, 14684, 17780, 18355, 25697, 29368, 35560, 36710, 51394, 58736, 71120, 73420, 102788, 128485, 146840, 205576, 256970, 293680, 411152, 466217, 513940, 932434, 1027880, 1864868, 2055760, 2331085, 3263519, 3729736, 4662170, 6527038, 7459472, 9324340, 13054076, 16317595, 18648680, 26108152, 32635190, 37297360, 52216304, 65270380, 130540760, 261081520]

約数ペア:

[(1, 261081520), (2, 130540760), (4, 65270380), (5, 52216304), (7, 37297360), (8, 32635190), (10, 26108152), (14, 18648680), (16, 16317595), (20, 13054076), (28, 9324340), (35, 7459472), (40, 6527038), (56, 4662170), (70, 3729736), (80, 3263519), (112, 2331085), (127, 2055760), (140, 1864868), (254, 1027880), (280, 932434), (508, 513940), (560, 466217), (635, 411152), (889, 293680), (1016, 256970), (1270, 205576), (1778, 146840), (2032, 128485), (2540, 102788), (3556, 73420), (3671, 71120), (4445, 58736), (5080, 51394), (7112, 36710), (7342, 35560), (8890, 29368), (10160, 25697), (14224, 18355), (14684, 17780)]