81817775

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{4127}}^1$

素因数の和:4211

約数の個数: 24

約数和(自身を含む): 111076224

約数和(自身を除く): 29258449

約数列:

[1, 5, 13, 25, 61, 65, 305, 325, 793, 1525, 3965, 4127, 19825, 20635, 53651, 103175, 251747, 268255, 1258735, 1341275, 3272711, 6293675, 16363555, 81817775]

約数ペア:

[(1, 81817775), (5, 16363555), (13, 6293675), (25, 3272711), (61, 1341275), (65, 1258735), (305, 268255), (325, 251747), (793, 103175), (1525, 53651), (3965, 20635), (4127, 19825)]