27891305

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{587}}^1$

素因数の和:665

約数の個数: 32

約数和(自身を含む): 39118464

約数和(自身を除く): 11227159

約数列:

[1, 5, 13, 17, 43, 65, 85, 215, 221, 559, 587, 731, 1105, 2795, 2935, 3655, 7631, 9503, 9979, 25241, 38155, 47515, 49895, 126205, 129727, 328133, 429097, 648635, 1640665, 2145485, 5578261, 27891305]

約数ペア:

[(1, 27891305), (5, 5578261), (13, 2145485), (17, 1640665), (43, 648635), (65, 429097), (85, 328133), (215, 129727), (221, 126205), (559, 49895), (587, 47515), (731, 38155), (1105, 25241), (2795, 9979), (2935, 9503), (3655, 7631)]