81242640

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{2129}}^1$

素因数の和:2201

約数の個数: 120

約数和(自身を含む): 278118360

約数和(自身を除く): 196875720

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, 2129, 2385, 2544, 3180, 3816, 4240, 4258, 4770, 6360, 6387, 7632, 8516, 9540, 10645, 12720, 12774, 17032, 19080, 19161, 21290, 25548, 31935, 34064, 38160, 38322, 42580, 51096, 63870, 76644, 85160, 95805, 102192, 112837, 127740, 153288, 170320, 191610, 225674, 255480, 306576, 338511, 383220, 451348, 510960, 564185, 677022, 766440, 902696, 1015533, 1128370, 1354044, 1532880, 1692555, 1805392, 2031066, 2256740, 2708088, 3385110, 4062132, 4513480, 5077665, 5416176, 6770220, 8124264, 9026960, 10155330, 13540440, 16248528, 20310660, 27080880, 40621320, 81242640]

約数ペア:

[(1, 81242640), (2, 40621320), (3, 27080880), (4, 20310660), (5, 16248528), (6, 13540440), (8, 10155330), (9, 9026960), (10, 8124264), (12, 6770220), (15, 5416176), (16, 5077665), (18, 4513480), (20, 4062132), (24, 3385110), (30, 2708088), (36, 2256740), (40, 2031066), (45, 1805392), (48, 1692555), (53, 1532880), (60, 1354044), (72, 1128370), (80, 1015533), (90, 902696), (106, 766440), (120, 677022), (144, 564185), (159, 510960), (180, 451348), (212, 383220), (240, 338511), (265, 306576), (318, 255480), (360, 225674), (424, 191610), (477, 170320), (530, 153288), (636, 127740), (720, 112837), (795, 102192), (848, 95805), (954, 85160), (1060, 76644), (1272, 63870), (1590, 51096), (1908, 42580), (2120, 38322), (2129, 38160), (2385, 34064), (2544, 31935), (3180, 25548), (3816, 21290), (4240, 19161), (4258, 19080), (4770, 17032), (6360, 12774), (6387, 12720), (7632, 10645), (8516, 9540)]