21784113

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1171}}^1$

素因数の和:1246

約数の個数: 32

約数和(自身を含む): 35441280

約数和(自身を除く): 13657167

約数列:

[1, 3, 9, 13, 27, 39, 53, 117, 159, 351, 477, 689, 1171, 1431, 2067, 3513, 6201, 10539, 15223, 18603, 31617, 45669, 62063, 137007, 186189, 411021, 558567, 806819, 1675701, 2420457, 7261371, 21784113]

約数ペア:

[(1, 21784113), (3, 7261371), (9, 2420457), (13, 1675701), (27, 806819), (39, 558567), (53, 411021), (117, 186189), (159, 137007), (351, 62063), (477, 45669), (689, 31617), (1171, 18603), (1431, 15223), (2067, 10539), (3513, 6201)]