20639528

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{28351}}^1$

素因数の和:28377

約数の個数: 32

約数和(自身を含む): 47631360

約数和(自身を除く): 26991832

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728, 28351, 56702, 113404, 198457, 226808, 368563, 396914, 737126, 793828, 1474252, 1587656, 2579941, 2948504, 5159882, 10319764, 20639528]

約数ペア:

[(1, 20639528), (2, 10319764), (4, 5159882), (7, 2948504), (8, 2579941), (13, 1587656), (14, 1474252), (26, 793828), (28, 737126), (52, 396914), (56, 368563), (91, 226808), (104, 198457), (182, 113404), (364, 56702), (728, 28351)]