21207060

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{16831}}^1$

素因数の和:16853

約数の個数: 72

約数和(自身を含む): 73522176

約数和(自身を除く): 52315116

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 16831, 33662, 50493, 67324, 84155, 100986, 117817, 151479, 168310, 201972, 235634, 252465, 302958, 336620, 353451, 471268, 504930, 589085, 605916, 706902, 757395, 1009860, 1060353, 1178170, 1413804, 1514790, 1767255, 2120706, 2356340, 3029580, 3534510, 4241412, 5301765, 7069020, 10603530, 21207060]

約数ペア:

[(1, 21207060), (2, 10603530), (3, 7069020), (4, 5301765), (5, 4241412), (6, 3534510), (7, 3029580), (9, 2356340), (10, 2120706), (12, 1767255), (14, 1514790), (15, 1413804), (18, 1178170), (20, 1060353), (21, 1009860), (28, 757395), (30, 706902), (35, 605916), (36, 589085), (42, 504930), (45, 471268), (60, 353451), (63, 336620), (70, 302958), (84, 252465), (90, 235634), (105, 201972), (126, 168310), (140, 151479), (180, 117817), (210, 100986), (252, 84155), (315, 67324), (420, 50493), (630, 33662), (1260, 16831)]