199977215

素因数分解:

$5^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:347

約数の個数: 32

約数和(自身を含む): 253108800

約数和(自身を除く): 53131585

約数列:

[1, 5, 53, 61, 89, 139, 265, 305, 445, 695, 3233, 4717, 5429, 7367, 8479, 12371, 16165, 23585, 27145, 36835, 42395, 61855, 287737, 449387, 655663, 754631, 1438685, 2246935, 3278315, 3773155, 39995443, 199977215]

約数ペア:

[(1, 199977215), (5, 39995443), (53, 3773155), (61, 3278315), (89, 2246935), (139, 1438685), (265, 754631), (305, 655663), (445, 449387), (695, 287737), (3233, 61855), (4717, 42395), (5429, 36835), (7367, 27145), (8479, 23585), (12371, 16165)]