21209742

素因数分解:

$2^1\times 3^3\times {\mathrm{523}}^1\times {\mathrm{751}}^1$

素因数の和:1285

約数の個数: 32

約数和(自身を含む): 47285760

約数和(自身を除く): 26076018

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 523, 751, 1046, 1502, 1569, 2253, 3138, 4506, 4707, 6759, 9414, 13518, 14121, 20277, 28242, 40554, 392773, 785546, 1178319, 2356638, 3534957, 7069914, 10604871, 21209742]

約数ペア:

[(1, 21209742), (2, 10604871), (3, 7069914), (6, 3534957), (9, 2356638), (18, 1178319), (27, 785546), (54, 392773), (523, 40554), (751, 28242), (1046, 20277), (1502, 14121), (1569, 13518), (2253, 9414), (3138, 6759), (4506, 4707)]