78880725

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{157}}^1$

素因数の和:220

約数の個数: 144

約数和(自身を含む): 183381120

約数和(自身を除く): 104500395

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 25, 29, 33, 35, 45, 55, 63, 75, 77, 87, 99, 105, 145, 157, 165, 175, 203, 225, 231, 261, 275, 315, 319, 385, 435, 471, 495, 525, 609, 693, 725, 785, 825, 957, 1015, 1099, 1155, 1305, 1413, 1575, 1595, 1727, 1827, 1925, 2175, 2233, 2355, 2475, 2871, 3045, 3297, 3465, 3925, 4553, 4785, 5075, 5181, 5495, 5775, 6525, 6699, 7065, 7975, 8635, 9135, 9891, 11165, 11775, 12089, 13659, 14355, 15225, 15543, 16485, 17325, 20097, 22765, 23925, 25905, 27475, 31871, 33495, 35325, 36267, 40977, 43175, 45675, 49455, 50083, 55825, 60445, 68295, 71775, 77715, 82425, 95613, 100485, 108801, 113825, 129525, 150249, 159355, 167475, 181335, 204885, 247275, 250415, 286839, 302225, 341475, 350581, 388575, 450747, 478065, 502425, 544005, 751245, 796775, 906675, 1024425, 1051743, 1252075, 1434195, 1752905, 2253735, 2390325, 2720025, 3155229, 3756225, 5258715, 7170975, 8764525, 11268675, 15776145, 26293575, 78880725]

約数ペア:

[(1, 78880725), (3, 26293575), (5, 15776145), (7, 11268675), (9, 8764525), (11, 7170975), (15, 5258715), (21, 3756225), (25, 3155229), (29, 2720025), (33, 2390325), (35, 2253735), (45, 1752905), (55, 1434195), (63, 1252075), (75, 1051743), (77, 1024425), (87, 906675), (99, 796775), (105, 751245), (145, 544005), (157, 502425), (165, 478065), (175, 450747), (203, 388575), (225, 350581), (231, 341475), (261, 302225), (275, 286839), (315, 250415), (319, 247275), (385, 204885), (435, 181335), (471, 167475), (495, 159355), (525, 150249), (609, 129525), (693, 113825), (725, 108801), (785, 100485), (825, 95613), (957, 82425), (1015, 77715), (1099, 71775), (1155, 68295), (1305, 60445), (1413, 55825), (1575, 50083), (1595, 49455), (1727, 45675), (1827, 43175), (1925, 40977), (2175, 36267), (2233, 35325), (2355, 33495), (2475, 31871), (2871, 27475), (3045, 25905), (3297, 23925), (3465, 22765), (3925, 20097), (4553, 17325), (4785, 16485), (5075, 15543), (5181, 15225), (5495, 14355), (5775, 13659), (6525, 12089), (6699, 11775), (7065, 11165), (7975, 9891), (8635, 9135)]