31891215

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{751}}^1$

素因数の和:927

約数の個数: 32

約数和(自身を含む): 54144000

約数和(自身を除く): 22252785

約数列:

[1, 3, 5, 15, 19, 57, 95, 149, 285, 447, 745, 751, 2235, 2253, 2831, 3755, 8493, 11265, 14155, 14269, 42465, 42807, 71345, 111899, 214035, 335697, 559495, 1678485, 2126081, 6378243, 10630405, 31891215]

約数ペア:

[(1, 31891215), (3, 10630405), (5, 6378243), (15, 2126081), (19, 1678485), (57, 559495), (95, 335697), (149, 214035), (285, 111899), (447, 71345), (745, 42807), (751, 42465), (2235, 14269), (2253, 14155), (2831, 11265), (3755, 8493)]