20809496

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{2887}}^1$

素因数の和:2963

約数の個数: 32

約数和(自身を含む): 42107040

約数和(自身を除く): 21297544

約数列:

[1, 2, 4, 8, 17, 34, 53, 68, 106, 136, 212, 424, 901, 1802, 2887, 3604, 5774, 7208, 11548, 23096, 49079, 98158, 153011, 196316, 306022, 392632, 612044, 1224088, 2601187, 5202374, 10404748, 20809496]

約数ペア:

[(1, 20809496), (2, 10404748), (4, 5202374), (8, 2601187), (17, 1224088), (34, 612044), (53, 392632), (68, 306022), (106, 196316), (136, 153011), (212, 98158), (424, 49079), (901, 23096), (1802, 11548), (2887, 7208), (3604, 5774)]