1991691

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{587}}^1$

素因数の和:635

約数の個数: 24

約数和(自身を含む): 3210480

約数和(自身を除く): 1218789

約数列:

[1, 3, 9, 13, 29, 39, 87, 117, 261, 377, 587, 1131, 1761, 3393, 5283, 7631, 17023, 22893, 51069, 68679, 153207, 221299, 663897, 1991691]

約数ペア:

[(1, 1991691), (3, 663897), (9, 221299), (13, 153207), (29, 68679), (39, 51069), (87, 22893), (117, 17023), (261, 7631), (377, 5283), (587, 3393), (1131, 1761)]