19664425

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{3109}}^1$

素因数の和:3153

約数の個数: 24

約数和(自身を含む): 27766080

約数和(自身を除く): 8101655

約数列:

[1, 5, 11, 23, 25, 55, 115, 253, 275, 575, 1265, 3109, 6325, 15545, 34199, 71507, 77725, 170995, 357535, 786577, 854975, 1787675, 3932885, 19664425]

約数ペア:

[(1, 19664425), (5, 3932885), (11, 1787675), (23, 854975), (25, 786577), (55, 357535), (115, 170995), (253, 77725), (275, 71507), (575, 34199), (1265, 15545), (3109, 6325)]