221982180

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{727}}^2$

素因数の和:1473

約数の個数: 72

約数和(自身を含む): 711321408

約数和(自身を除く): 489339228

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, 210, 420, 727, 1454, 2181, 2908, 3635, 4362, 5089, 7270, 8724, 10178, 10905, 14540, 15267, 20356, 21810, 25445, 30534, 43620, 50890, 61068, 76335, 101780, 152670, 305340, 528529, 1057058, 1585587, 2114116, 2642645, 3171174, 3699703, 5285290, 6342348, 7399406, 7927935, 10570580, 11099109, 14798812, 15855870, 18498515, 22198218, 31711740, 36997030, 44396436, 55495545, 73994060, 110991090, 221982180]

約数ペア:

[(1, 221982180), (2, 110991090), (3, 73994060), (4, 55495545), (5, 44396436), (6, 36997030), (7, 31711740), (10, 22198218), (12, 18498515), (14, 15855870), (15, 14798812), (20, 11099109), (21, 10570580), (28, 7927935), (30, 7399406), (35, 6342348), (42, 5285290), (60, 3699703), (70, 3171174), (84, 2642645), (105, 2114116), (140, 1585587), (210, 1057058), (420, 528529), (727, 305340), (1454, 152670), (2181, 101780), (2908, 76335), (3635, 61068), (4362, 50890), (5089, 43620), (7270, 30534), (8724, 25445), (10178, 21810), (10905, 20356), (14540, 15267)]