21227305

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{311}}^1$

素因数の和:417

約数の個数: 32

約数和(自身を含む): 29922048

約数和(自身を除く): 8694743

約数列:

[1, 5, 11, 17, 55, 73, 85, 187, 311, 365, 803, 935, 1241, 1555, 3421, 4015, 5287, 6205, 13651, 17105, 22703, 26435, 58157, 68255, 113515, 249733, 290785, 385951, 1248665, 1929755, 4245461, 21227305]

約数ペア:

[(1, 21227305), (5, 4245461), (11, 1929755), (17, 1248665), (55, 385951), (73, 290785), (85, 249733), (187, 113515), (311, 68255), (365, 58157), (803, 26435), (935, 22703), (1241, 17105), (1555, 13651), (3421, 6205), (4015, 5287)]