1640280051

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{1065809}}^1$

素因数の和:1065840

約数の個数: 20

約数和(自身を含む): 2579260200

約数和(自身を除く): 938980149

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 1065809, 3197427, 9592281, 20250371, 28776843, 60751113, 86330529, 182253339, 546760017, 1640280051]

約数ペア:

[(1, 1640280051), (3, 546760017), (9, 182253339), (19, 86330529), (27, 60751113), (57, 28776843), (81, 20250371), (171, 9592281), (513, 3197427), (1539, 1065809)]