21409895

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{14321}}^1$

素因数の和:14362

約数の個数: 16

約数和(自身を含む): 28873152

約数和(自身を除く): 7463257

約数列:

[1, 5, 13, 23, 65, 115, 299, 1495, 14321, 71605, 186173, 329383, 930865, 1646915, 4281979, 21409895]

約数ペア:

[(1, 21409895), (5, 4281979), (13, 1646915), (23, 930865), (65, 329383), (115, 186173), (299, 71605), (1495, 14321)]