28021370

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{439}}^1\times {\mathrm{491}}^1$

素因数の和:950

約数の個数: 32

約数和(自身を含む): 54552960

約数和(自身を除く): 26531590

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 439, 491, 878, 982, 2195, 2455, 4390, 4910, 5707, 6383, 11414, 12766, 28535, 31915, 57070, 63830, 215549, 431098, 1077745, 2155490, 2802137, 5604274, 14010685, 28021370]

約数ペア:

[(1, 28021370), (2, 14010685), (5, 5604274), (10, 2802137), (13, 2155490), (26, 1077745), (65, 431098), (130, 215549), (439, 63830), (491, 57070), (878, 31915), (982, 28535), (2195, 12766), (2455, 11414), (4390, 6383), (4910, 5707)]