21125580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{179}}^1\times {\mathrm{281}}^1$

素因数の和:479

約数の個数: 96

約数和(自身を含む): 68221440

約数和(自身を除く): 47095860

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 179, 210, 281, 358, 420, 537, 562, 716, 843, 895, 1074, 1124, 1253, 1405, 1686, 1790, 1967, 2148, 2506, 2685, 2810, 3372, 3580, 3759, 3934, 4215, 5012, 5370, 5620, 5901, 6265, 7518, 7868, 8430, 9835, 10740, 11802, 12530, 15036, 16860, 18795, 19670, 23604, 25060, 29505, 37590, 39340, 50299, 59010, 75180, 100598, 118020, 150897, 201196, 251495, 301794, 352093, 502990, 603588, 704186, 754485, 1005980, 1056279, 1408372, 1508970, 1760465, 2112558, 3017940, 3520930, 4225116, 5281395, 7041860, 10562790, 21125580]

約数ペア:

[(1, 21125580), (2, 10562790), (3, 7041860), (4, 5281395), (5, 4225116), (6, 3520930), (7, 3017940), (10, 2112558), (12, 1760465), (14, 1508970), (15, 1408372), (20, 1056279), (21, 1005980), (28, 754485), (30, 704186), (35, 603588), (42, 502990), (60, 352093), (70, 301794), (84, 251495), (105, 201196), (140, 150897), (179, 118020), (210, 100598), (281, 75180), (358, 59010), (420, 50299), (537, 39340), (562, 37590), (716, 29505), (843, 25060), (895, 23604), (1074, 19670), (1124, 18795), (1253, 16860), (1405, 15036), (1686, 12530), (1790, 11802), (1967, 10740), (2148, 9835), (2506, 8430), (2685, 7868), (2810, 7518), (3372, 6265), (3580, 5901), (3759, 5620), (3934, 5370), (4215, 5012)]