21187353

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{149}}^1$

素因数の和:333

約数の個数: 32

約数和(自身を含む): 32256000

約数和(自身を除く): 11068647

約数列:

[1, 3, 11, 31, 33, 93, 139, 149, 341, 417, 447, 1023, 1529, 1639, 4309, 4587, 4619, 4917, 12927, 13857, 20711, 47399, 50809, 62133, 142197, 152427, 227821, 642041, 683463, 1926123, 7062451, 21187353]

約数ペア:

[(1, 21187353), (3, 7062451), (11, 1926123), (31, 683463), (33, 642041), (93, 227821), (139, 152427), (149, 142197), (341, 62133), (417, 50809), (447, 47399), (1023, 20711), (1529, 13857), (1639, 12927), (4309, 4917), (4587, 4619)]