20731711

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{149}}^1$

素因数の和:319

約数の個数: 32

約数和(自身を含む): 28224000

約数和(自身を除く): 7492289

約数列:

[1, 7, 11, 13, 77, 91, 139, 143, 149, 973, 1001, 1043, 1529, 1639, 1807, 1937, 10703, 11473, 12649, 13559, 19877, 20711, 21307, 139139, 144977, 149149, 227821, 269243, 1594747, 1884701, 2961673, 20731711]

約数ペア:

[(1, 20731711), (7, 2961673), (11, 1884701), (13, 1594747), (77, 269243), (91, 227821), (139, 149149), (143, 144977), (149, 139139), (973, 21307), (1001, 20711), (1043, 19877), (1529, 13559), (1639, 12649), (1807, 11473), (1937, 10703)]