311920915

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1\times {\mathrm{397}}^1$

素因数の和:607

約数の個数: 32

約数和(自身を含む): 400725504

約数和(自身を除く): 88804589

約数列:

[1, 5, 31, 37, 137, 155, 185, 397, 685, 1147, 1985, 4247, 5069, 5735, 12307, 14689, 21235, 25345, 54389, 61535, 73445, 157139, 271945, 455359, 785695, 1686059, 2012393, 2276795, 8430295, 10061965, 62384183, 311920915]

約数ペア:

[(1, 311920915), (5, 62384183), (31, 10061965), (37, 8430295), (137, 2276795), (155, 2012393), (185, 1686059), (397, 785695), (685, 455359), (1147, 271945), (1985, 157139), (4247, 73445), (5069, 61535), (5735, 54389), (12307, 25345), (14689, 21235)]