21890135

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{11197}}^1$

素因数の和:11242

約数の個数: 16

約数和(自身を含む): 29025216

約数和(自身を除く): 7135081

約数列:

[1, 5, 17, 23, 85, 115, 391, 1955, 11197, 55985, 190349, 257531, 951745, 1287655, 4378027, 21890135]

約数ペア:

[(1, 21890135), (5, 4378027), (17, 1287655), (23, 951745), (85, 257531), (115, 190349), (391, 55985), (1955, 11197)]