18995977

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2711}}^1$

素因数の和:2749

約数の個数: 24

約数和(自身を含む): 25970112

約数和(自身を除く): 6974135

約数列:

[1, 7, 11, 13, 49, 77, 91, 143, 539, 637, 1001, 2711, 7007, 18977, 29821, 35243, 132839, 208747, 246701, 387673, 1461229, 1726907, 2713711, 18995977]

約数ペア:

[(1, 18995977), (7, 2713711), (11, 1726907), (13, 1461229), (49, 387673), (77, 246701), (91, 208747), (143, 132839), (539, 35243), (637, 29821), (1001, 18977), (2711, 7007)]