31407561

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{149}}^1\times {\mathrm{211}}^1$

素因数の和:406

約数の個数: 32

約数和(自身を含む): 48336000

約数和(自身を除く): 16928439

約数列:

[1, 3, 9, 27, 37, 111, 149, 211, 333, 447, 633, 999, 1341, 1899, 4023, 5513, 5697, 7807, 16539, 23421, 31439, 49617, 70263, 94317, 148851, 210789, 282951, 848853, 1163243, 3489729, 10469187, 31407561]

約数ペア:

[(1, 31407561), (3, 10469187), (9, 3489729), (27, 1163243), (37, 848853), (111, 282951), (149, 210789), (211, 148851), (333, 94317), (447, 70263), (633, 49617), (999, 31439), (1341, 23421), (1899, 16539), (4023, 7807), (5513, 5697)]