28308765

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{1399}}^1$

素因数の和:1497

約数の個数: 32

約数和(自身を含む): 48384000

約数和(自身を除く): 20075235

約数列:

[1, 3, 5, 15, 19, 57, 71, 95, 213, 285, 355, 1065, 1349, 1399, 4047, 4197, 6745, 6995, 20235, 20985, 26581, 79743, 99329, 132905, 297987, 398715, 496645, 1489935, 1887251, 5661753, 9436255, 28308765]

約数ペア:

[(1, 28308765), (3, 9436255), (5, 5661753), (15, 1887251), (19, 1489935), (57, 496645), (71, 398715), (95, 297987), (213, 132905), (285, 99329), (355, 79743), (1065, 26581), (1349, 20985), (1399, 20235), (4047, 6995), (4197, 6745)]