18408906

素因数分解:

$2^1\times 3^2\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{211}}^1$

素因数の和:387

約数の個数: 48

約数和(自身を含む): 41472288

約数和(自身を除く): 23063382

約数列:

[1, 2, 3, 6, 9, 18, 37, 74, 111, 131, 211, 222, 262, 333, 393, 422, 633, 666, 786, 1179, 1266, 1899, 2358, 3798, 4847, 7807, 9694, 14541, 15614, 23421, 27641, 29082, 43623, 46842, 55282, 70263, 82923, 87246, 140526, 165846, 248769, 497538, 1022717, 2045434, 3068151, 6136302, 9204453, 18408906]

約数ペア:

[(1, 18408906), (2, 9204453), (3, 6136302), (6, 3068151), (9, 2045434), (18, 1022717), (37, 497538), (74, 248769), (111, 165846), (131, 140526), (211, 87246), (222, 82923), (262, 70263), (333, 55282), (393, 46842), (422, 43623), (633, 29082), (666, 27641), (786, 23421), (1179, 15614), (1266, 14541), (1899, 9694), (2358, 7807), (3798, 4847)]