21621180

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{51479}}^1$

素因数の和:51498

約数の個数: 48

約数和(自身を含む): 69189120

約数和(自身を除く): 47567940

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, 51479, 102958, 154437, 205916, 257395, 308874, 360353, 514790, 617748, 720706, 772185, 1029580, 1081059, 1441412, 1544370, 1801765, 2162118, 3088740, 3603530, 4324236, 5405295, 7207060, 10810590, 21621180]

約数ペア:

[(1, 21621180), (2, 10810590), (3, 7207060), (4, 5405295), (5, 4324236), (6, 3603530), (7, 3088740), (10, 2162118), (12, 1801765), (14, 1544370), (15, 1441412), (20, 1081059), (21, 1029580), (28, 772185), (30, 720706), (35, 617748), (42, 514790), (60, 360353), (70, 308874), (84, 257395), (105, 205916), (140, 154437), (210, 102958), (420, 51479)]