1187279961

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{2975639}}^1$

素因数の和:2975668

約数の個数: 16

約数和(自身を含む): 1904409600

約数和(自身を除く): 717129639

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 2975639, 8926917, 20829473, 56537141, 62488419, 169611423, 395759987, 1187279961]

約数ペア:

[(1, 1187279961), (3, 395759987), (7, 169611423), (19, 62488419), (21, 56537141), (57, 20829473), (133, 8926917), (399, 2975639)]