198897215

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{157231}}^1$

素因数の和:157270

約数の個数: 16

約数和(自身を含む): 271696896

約数和(自身を除く): 72799681

約数列:

[1, 5, 11, 23, 55, 115, 253, 1265, 157231, 786155, 1729541, 3616313, 8647705, 18081565, 39779443, 198897215]

約数ペア:

[(1, 198897215), (5, 39779443), (11, 18081565), (23, 8647705), (55, 3616313), (115, 1729541), (253, 786155), (1265, 157231)]