19695964

素因数分解:

$2^2\times {\mathrm{79}}^1\times {\mathrm{157}}^1\times {\mathrm{397}}^1$

素因数の和:637

約数の個数: 24

約数和(自身を含む): 35215040

約数和(自身を除く): 15519076

約数列:

[1, 2, 4, 79, 157, 158, 314, 316, 397, 628, 794, 1588, 12403, 24806, 31363, 49612, 62329, 62726, 124658, 125452, 249316, 4923991, 9847982, 19695964]

約数ペア:

[(1, 19695964), (2, 9847982), (4, 4923991), (79, 249316), (157, 125452), (158, 124658), (314, 62726), (316, 62329), (397, 49612), (628, 31363), (794, 24806), (1588, 12403)]