81318960

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{2131}}^1$

素因数の和:2203

約数の個数: 120

約数和(自身を含む): 278379504

約数和(自身を除く): 197060544

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 53, 60, 72, 80, 90, 106, 120, 144, 159, 180, 212, 240, 265, 318, 360, 424, 477, 530, 636, 720, 795, 848, 954, 1060, 1272, 1590, 1908, 2120, 2131, 2385, 2544, 3180, 3816, 4240, 4262, 4770, 6360, 6393, 7632, 8524, 9540, 10655, 12720, 12786, 17048, 19080, 19179, 21310, 25572, 31965, 34096, 38160, 38358, 42620, 51144, 63930, 76716, 85240, 95895, 102288, 112943, 127860, 153432, 170480, 191790, 225886, 255720, 306864, 338829, 383580, 451772, 511440, 564715, 677658, 767160, 903544, 1016487, 1129430, 1355316, 1534320, 1694145, 1807088, 2032974, 2258860, 2710632, 3388290, 4065948, 4517720, 5082435, 5421264, 6776580, 8131896, 9035440, 10164870, 13553160, 16263792, 20329740, 27106320, 40659480, 81318960]

約数ペア:

[(1, 81318960), (2, 40659480), (3, 27106320), (4, 20329740), (5, 16263792), (6, 13553160), (8, 10164870), (9, 9035440), (10, 8131896), (12, 6776580), (15, 5421264), (16, 5082435), (18, 4517720), (20, 4065948), (24, 3388290), (30, 2710632), (36, 2258860), (40, 2032974), (45, 1807088), (48, 1694145), (53, 1534320), (60, 1355316), (72, 1129430), (80, 1016487), (90, 903544), (106, 767160), (120, 677658), (144, 564715), (159, 511440), (180, 451772), (212, 383580), (240, 338829), (265, 306864), (318, 255720), (360, 225886), (424, 191790), (477, 170480), (530, 153432), (636, 127860), (720, 112943), (795, 102288), (848, 95895), (954, 85240), (1060, 76716), (1272, 63930), (1590, 51144), (1908, 42620), (2120, 38358), (2131, 38160), (2385, 34096), (2544, 31965), (3180, 25572), (3816, 21310), (4240, 19179), (4262, 19080), (4770, 17048), (6360, 12786), (6393, 12720), (7632, 10655), (8524, 9540)]