21985136

素因数分解:

$2^4\times {\mathrm{89}}^1\times {\mathrm{15439}}^1$

素因数の和:15536

約数の個数: 20

約数和(自身を含む): 43077600

約数和(自身を除く): 21092464

約数列:

[1, 2, 4, 8, 16, 89, 178, 356, 712, 1424, 15439, 30878, 61756, 123512, 247024, 1374071, 2748142, 5496284, 10992568, 21985136]

約数ペア:

[(1, 21985136), (2, 10992568), (4, 5496284), (8, 2748142), (16, 1374071), (89, 247024), (178, 123512), (356, 61756), (712, 30878), (1424, 15439)]