21871735

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{4423}}^1$

素因数の和:4494

約数の個数: 16

約数和(自身を含む): 28030464

約数和(自身を除く): 6158729

約数列:

[1, 5, 23, 43, 115, 215, 989, 4423, 4945, 22115, 101729, 190189, 508645, 950945, 4374347, 21871735]

約数ペア:

[(1, 21871735), (5, 4374347), (23, 950945), (43, 508645), (115, 190189), (215, 101729), (989, 22115), (4423, 4945)]