21086091

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{787}}^1$

素因数の和:1035

約数の個数: 24

約数和(自身を含む): 32985680

約数和(自身を除く): 11899589

約数列:

[1, 3, 9, 13, 39, 117, 229, 687, 787, 2061, 2361, 2977, 7083, 8931, 10231, 26793, 30693, 92079, 180223, 540669, 1622007, 2342899, 7028697, 21086091]

約数ペア:

[(1, 21086091), (3, 7028697), (9, 2342899), (13, 1622007), (39, 540669), (117, 180223), (229, 92079), (687, 30693), (787, 26793), (2061, 10231), (2361, 8931), (2977, 7083)]