28165620

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{67061}}^1$

素因数の和:67080

約数の個数: 48

約数和(自身を含む): 90131328

約数和(自身を除く): 61965708

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, 67061, 134122, 201183, 268244, 335305, 402366, 469427, 670610, 804732, 938854, 1005915, 1341220, 1408281, 1877708, 2011830, 2347135, 2816562, 4023660, 4694270, 5633124, 7041405, 9388540, 14082810, 28165620]

約数ペア:

[(1, 28165620), (2, 14082810), (3, 9388540), (4, 7041405), (5, 5633124), (6, 4694270), (7, 4023660), (10, 2816562), (12, 2347135), (14, 2011830), (15, 1877708), (20, 1408281), (21, 1341220), (28, 1005915), (30, 938854), (35, 804732), (42, 670610), (60, 469427), (70, 402366), (84, 335305), (105, 268244), (140, 201183), (210, 134122), (420, 67061)]