20696895

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{19997}}^1$

素因数の和:20031

約数の個数: 24

約数和(自身を含む): 37436256

約数和(自身を除く): 16739361

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 207, 345, 1035, 19997, 59991, 99985, 179973, 299955, 459931, 899865, 1379793, 2299655, 4139379, 6898965, 20696895]

約数ペア:

[(1, 20696895), (3, 6898965), (5, 4139379), (9, 2299655), (15, 1379793), (23, 899865), (45, 459931), (69, 299955), (115, 179973), (207, 99985), (345, 59991), (1035, 19997)]