1721993

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{149}}^1$

素因数の和:296

約数の個数: 16

約数和(自身を含む): 2150400

約数和(自身を除く): 428407

約数列:

[1, 7, 13, 91, 127, 149, 889, 1043, 1651, 1937, 11557, 13559, 18923, 132461, 245999, 1721993]

約数ペア:

[(1, 1721993), (7, 245999), (13, 132461), (91, 18923), (127, 13559), (149, 11557), (889, 1937), (1043, 1651)]