20789008

素因数分解:

$2^4\times {\mathrm{79}}^1\times {\mathrm{16447}}^1$

素因数の和:16534

約数の個数: 20

約数和(自身を含む): 40791040

約数和(自身を除く): 20002032

約数列:

[1, 2, 4, 8, 16, 79, 158, 316, 632, 1264, 16447, 32894, 65788, 131576, 263152, 1299313, 2598626, 5197252, 10394504, 20789008]

約数ペア:

[(1, 20789008), (2, 10394504), (4, 5197252), (8, 2598626), (16, 1299313), (79, 263152), (158, 131576), (316, 65788), (632, 32894), (1264, 16447)]