21219426

素因数分解:

$2^1\times 3^2\times {\mathrm{37}}^1\times {\mathrm{151}}^1\times {\mathrm{211}}^1$

素因数の和:407

約数の個数: 48

約数和(自身を含む): 47755968

約数和(自身を除く): 26536542

約数列:

[1, 2, 3, 6, 9, 18, 37, 74, 111, 151, 211, 222, 302, 333, 422, 453, 633, 666, 906, 1266, 1359, 1899, 2718, 3798, 5587, 7807, 11174, 15614, 16761, 23421, 31861, 33522, 46842, 50283, 63722, 70263, 95583, 100566, 140526, 191166, 286749, 573498, 1178857, 2357714, 3536571, 7073142, 10609713, 21219426]

約数ペア:

[(1, 21219426), (2, 10609713), (3, 7073142), (6, 3536571), (9, 2357714), (18, 1178857), (37, 573498), (74, 286749), (111, 191166), (151, 140526), (211, 100566), (222, 95583), (302, 70263), (333, 63722), (422, 50283), (453, 46842), (633, 33522), (666, 31861), (906, 23421), (1266, 16761), (1359, 15614), (1899, 11174), (2718, 7807), (3798, 5587)]