21391578

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{809}}^1$

素因数の和:943

約数の個数: 48

約数和(自身を含む): 50417640

約数和(自身を除く): 29026062

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 113, 117, 226, 234, 339, 678, 809, 1017, 1469, 1618, 2034, 2427, 2938, 4407, 4854, 7281, 8814, 10517, 13221, 14562, 21034, 26442, 31551, 63102, 91417, 94653, 182834, 189306, 274251, 548502, 822753, 1188421, 1645506, 2376842, 3565263, 7130526, 10695789, 21391578]

約数ペア:

[(1, 21391578), (2, 10695789), (3, 7130526), (6, 3565263), (9, 2376842), (13, 1645506), (18, 1188421), (26, 822753), (39, 548502), (78, 274251), (113, 189306), (117, 182834), (226, 94653), (234, 91417), (339, 63102), (678, 31551), (809, 26442), (1017, 21034), (1469, 14562), (1618, 13221), (2034, 10517), (2427, 8814), (2938, 7281), (4407, 4854)]