28260995

素因数分解:

$5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{61}}^2$

素因数の和:172

約数の個数: 36

約数和(自身を含む): 41401152

約数和(自身を除く): 13140157

約数列:

[1, 5, 7, 31, 35, 49, 61, 155, 217, 245, 305, 427, 1085, 1519, 1891, 2135, 2989, 3721, 7595, 9455, 13237, 14945, 18605, 26047, 66185, 92659, 115351, 130235, 182329, 463295, 576755, 807457, 911645, 4037285, 5652199, 28260995]

約数ペア:

[(1, 28260995), (5, 5652199), (7, 4037285), (31, 911645), (35, 807457), (49, 576755), (61, 463295), (155, 182329), (217, 130235), (245, 115351), (305, 92659), (427, 66185), (1085, 26047), (1519, 18605), (1891, 14945), (2135, 13237), (2989, 9455), (3721, 7595)]