21642180

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{227}}^2$

素因数の和:473

約数の個数: 72

約数和(自身を含む): 69561408

約数和(自身を除く): 47919228

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, 227, 420, 454, 681, 908, 1135, 1362, 1589, 2270, 2724, 3178, 3405, 4540, 4767, 6356, 6810, 7945, 9534, 13620, 15890, 19068, 23835, 31780, 47670, 51529, 95340, 103058, 154587, 206116, 257645, 309174, 360703, 515290, 618348, 721406, 772935, 1030580, 1082109, 1442812, 1545870, 1803515, 2164218, 3091740, 3607030, 4328436, 5410545, 7214060, 10821090, 21642180]

約数ペア:

[(1, 21642180), (2, 10821090), (3, 7214060), (4, 5410545), (5, 4328436), (6, 3607030), (7, 3091740), (10, 2164218), (12, 1803515), (14, 1545870), (15, 1442812), (20, 1082109), (21, 1030580), (28, 772935), (30, 721406), (35, 618348), (42, 515290), (60, 360703), (70, 309174), (84, 257645), (105, 206116), (140, 154587), (210, 103058), (227, 95340), (420, 51529), (454, 47670), (681, 31780), (908, 23835), (1135, 19068), (1362, 15890), (1589, 13620), (2270, 9534), (2724, 7945), (3178, 6810), (3405, 6356), (4540, 4767)]