720993

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1$

素因数の和:181

約数の個数: 32

約数和(自身を含む): 1254400

約数和(自身を除く): 533407

約数列:

[1, 3, 7, 13, 19, 21, 39, 57, 91, 133, 139, 247, 273, 399, 417, 741, 973, 1729, 1807, 2641, 2919, 5187, 5421, 7923, 12649, 18487, 34333, 37947, 55461, 102999, 240331, 720993]

約数ペア:

[(1, 720993), (3, 240331), (7, 102999), (13, 55461), (19, 37947), (21, 34333), (39, 18487), (57, 12649), (91, 7923), (133, 5421), (139, 5187), (247, 2919), (273, 2641), (399, 1807), (417, 1729), (741, 973)]