1981341

素因数分解:

$3^4\times {\mathrm{61}}^1\times {\mathrm{401}}^1$

素因数の和:474

約数の個数: 20

約数和(自身を含む): 3015804

約数和(自身を除く): 1034463

約数列:

[1, 3, 9, 27, 61, 81, 183, 401, 549, 1203, 1647, 3609, 4941, 10827, 24461, 32481, 73383, 220149, 660447, 1981341]

約数ペア:

[(1, 1981341), (3, 660447), (9, 220149), (27, 73383), (61, 32481), (81, 24461), (183, 10827), (401, 4941), (549, 3609), (1203, 1647)]