211515945

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1\times {\mathrm{2309}}^1$

素因数の和:2545

約数の個数: 32

約数和(自身を含む): 351267840

約数和(自身を除く): 139751895

約数列:

[1, 3, 5, 15, 31, 93, 155, 197, 465, 591, 985, 2309, 2955, 6107, 6927, 11545, 18321, 30535, 34635, 71579, 91605, 214737, 357895, 454873, 1073685, 1364619, 2274365, 6823095, 14101063, 42303189, 70505315, 211515945]

約数ペア:

[(1, 211515945), (3, 70505315), (5, 42303189), (15, 14101063), (31, 6823095), (93, 2274365), (155, 1364619), (197, 1073685), (465, 454873), (591, 357895), (985, 214737), (2309, 91605), (2955, 71579), (6107, 34635), (6927, 30535), (11545, 18321)]