261493920

素因数分解:

$2^5\times 3^4\times 5^1\times {\mathrm{20177}}^1$

素因数の和:20204

約数の個数: 120

約数和(自身を含む): 922901364

約数和(自身を除く): 661407444

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 72, 80, 81, 90, 96, 108, 120, 135, 144, 160, 162, 180, 216, 240, 270, 288, 324, 360, 405, 432, 480, 540, 648, 720, 810, 864, 1080, 1296, 1440, 1620, 2160, 2592, 3240, 4320, 6480, 12960, 20177, 40354, 60531, 80708, 100885, 121062, 161416, 181593, 201770, 242124, 302655, 322832, 363186, 403540, 484248, 544779, 605310, 645664, 726372, 807080, 907965, 968496, 1089558, 1210620, 1452744, 1614160, 1634337, 1815930, 1936992, 2179116, 2421240, 2723895, 2905488, 3228320, 3268674, 3631860, 4358232, 4842480, 5447790, 5810976, 6537348, 7263720, 8171685, 8716464, 9684960, 10895580, 13074696, 14527440, 16343370, 17432928, 21791160, 26149392, 29054880, 32686740, 43582320, 52298784, 65373480, 87164640, 130746960, 261493920]

約数ペア:

[(1, 261493920), (2, 130746960), (3, 87164640), (4, 65373480), (5, 52298784), (6, 43582320), (8, 32686740), (9, 29054880), (10, 26149392), (12, 21791160), (15, 17432928), (16, 16343370), (18, 14527440), (20, 13074696), (24, 10895580), (27, 9684960), (30, 8716464), (32, 8171685), (36, 7263720), (40, 6537348), (45, 5810976), (48, 5447790), (54, 4842480), (60, 4358232), (72, 3631860), (80, 3268674), (81, 3228320), (90, 2905488), (96, 2723895), (108, 2421240), (120, 2179116), (135, 1936992), (144, 1815930), (160, 1634337), (162, 1614160), (180, 1452744), (216, 1210620), (240, 1089558), (270, 968496), (288, 907965), (324, 807080), (360, 726372), (405, 645664), (432, 605310), (480, 544779), (540, 484248), (648, 403540), (720, 363186), (810, 322832), (864, 302655), (1080, 242124), (1296, 201770), (1440, 181593), (1620, 161416), (2160, 121062), (2592, 100885), (3240, 80708), (4320, 60531), (6480, 40354), (12960, 20177)]