81865440

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{409}}^1$

素因数の和:569

約数の個数: 144

約数和(自身を含む): 282063600

約数和(自身を除く): 200198160

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 139, 144, 160, 180, 240, 278, 288, 360, 409, 417, 480, 556, 695, 720, 818, 834, 1112, 1227, 1251, 1390, 1440, 1636, 1668, 2045, 2085, 2224, 2454, 2502, 2780, 3272, 3336, 3681, 4090, 4170, 4448, 4908, 5004, 5560, 6135, 6255, 6544, 6672, 7362, 8180, 8340, 9816, 10008, 11120, 12270, 12510, 13088, 13344, 14724, 16360, 16680, 18405, 19632, 20016, 22240, 24540, 25020, 29448, 32720, 33360, 36810, 39264, 40032, 49080, 50040, 56851, 58896, 65440, 66720, 73620, 98160, 100080, 113702, 117792, 147240, 170553, 196320, 200160, 227404, 284255, 294480, 341106, 454808, 511659, 568510, 588960, 682212, 852765, 909616, 1023318, 1137020, 1364424, 1705530, 1819232, 2046636, 2274040, 2558295, 2728848, 3411060, 4093272, 4548080, 5116590, 5457696, 6822120, 8186544, 9096160, 10233180, 13644240, 16373088, 20466360, 27288480, 40932720, 81865440]

約数ペア:

[(1, 81865440), (2, 40932720), (3, 27288480), (4, 20466360), (5, 16373088), (6, 13644240), (8, 10233180), (9, 9096160), (10, 8186544), (12, 6822120), (15, 5457696), (16, 5116590), (18, 4548080), (20, 4093272), (24, 3411060), (30, 2728848), (32, 2558295), (36, 2274040), (40, 2046636), (45, 1819232), (48, 1705530), (60, 1364424), (72, 1137020), (80, 1023318), (90, 909616), (96, 852765), (120, 682212), (139, 588960), (144, 568510), (160, 511659), (180, 454808), (240, 341106), (278, 294480), (288, 284255), (360, 227404), (409, 200160), (417, 196320), (480, 170553), (556, 147240), (695, 117792), (720, 113702), (818, 100080), (834, 98160), (1112, 73620), (1227, 66720), (1251, 65440), (1390, 58896), (1440, 56851), (1636, 50040), (1668, 49080), (2045, 40032), (2085, 39264), (2224, 36810), (2454, 33360), (2502, 32720), (2780, 29448), (3272, 25020), (3336, 24540), (3681, 22240), (4090, 20016), (4170, 19632), (4448, 18405), (4908, 16680), (5004, 16360), (5560, 14724), (6135, 13344), (6255, 13088), (6544, 12510), (6672, 12270), (7362, 11120), (8180, 10008), (8340, 9816)]