1990994886937

素因数分解:

$7^2\times {\mathrm{203771}}^1\times {\mathrm{199403}}^1$

素因数の和:403188

約数の個数: 12

約数和(自身を含む): 2316078257616

約数和(自身を除く): 325083370679

約数列:

[1, 7, 49, 199403, 203771, 1395821, 1426397, 9770747, 9984779, 40632548713, 284427840991, 1990994886937]

約数ペア:

[(1, 1990994886937), (7, 284427840991), (49, 40632548713), (199403, 9984779), (203771, 9770747), (1395821, 1426397)]