217982545

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{127849}}^1$

素因数の和:127896

約数の個数: 16

約数和(自身を含む): 294566400

約数和(自身を除く): 76583855

約数列:

[1, 5, 11, 31, 55, 155, 341, 1705, 127849, 639245, 1406339, 3963319, 7031695, 19816595, 43596509, 217982545]

約数ペア:

[(1, 217982545), (5, 43596509), (11, 19816595), (31, 7031695), (55, 3963319), (155, 1406339), (341, 639245), (1705, 127849)]