21258942

素因数分解:

$2^1\times 3^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1$

素因数の和:233

約数の個数: 64

約数和(自身を含む): 47672064

約数和(自身を除く): 26413122

約数列:

[1, 2, 3, 6, 17, 34, 37, 43, 51, 74, 86, 102, 111, 129, 131, 222, 258, 262, 393, 629, 731, 786, 1258, 1462, 1591, 1887, 2193, 2227, 3182, 3774, 4386, 4454, 4773, 4847, 5633, 6681, 9546, 9694, 11266, 13362, 14541, 16899, 27047, 29082, 33798, 54094, 81141, 82399, 95761, 162282, 164798, 191522, 208421, 247197, 287283, 416842, 494394, 574566, 625263, 1250526, 3543157, 7086314, 10629471, 21258942]

約数ペア:

[(1, 21258942), (2, 10629471), (3, 7086314), (6, 3543157), (17, 1250526), (34, 625263), (37, 574566), (43, 494394), (51, 416842), (74, 287283), (86, 247197), (102, 208421), (111, 191522), (129, 164798), (131, 162282), (222, 95761), (258, 82399), (262, 81141), (393, 54094), (629, 33798), (731, 29082), (786, 27047), (1258, 16899), (1462, 14541), (1591, 13362), (1887, 11266), (2193, 9694), (2227, 9546), (3182, 6681), (3774, 5633), (4386, 4847), (4454, 4773)]