28478169

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{1291}}^1$

素因数の和:1362

約数の個数: 32

約数和(自身を含む): 45478400

約数和(自身を除く): 17000231

約数列:

[1, 3, 9, 19, 27, 43, 57, 129, 171, 387, 513, 817, 1161, 1291, 2451, 3873, 7353, 11619, 22059, 24529, 34857, 55513, 73587, 166539, 220761, 499617, 662283, 1054747, 1498851, 3164241, 9492723, 28478169]

約数ペア:

[(1, 28478169), (3, 9492723), (9, 3164241), (19, 1498851), (27, 1054747), (43, 662283), (57, 499617), (129, 220761), (171, 166539), (387, 73587), (513, 55513), (817, 34857), (1161, 24529), (1291, 22059), (2451, 11619), (3873, 7353)]