18972915

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{653}}^1$

素因数の和:823

約数の個数: 32

約数和(自身を含む): 32961600

約数和(自身を除く): 13988685

約数列:

[1, 3, 5, 13, 15, 39, 65, 149, 195, 447, 653, 745, 1937, 1959, 2235, 3265, 5811, 8489, 9685, 9795, 25467, 29055, 42445, 97297, 127335, 291891, 486485, 1264861, 1459455, 3794583, 6324305, 18972915]

約数ペア:

[(1, 18972915), (3, 6324305), (5, 3794583), (13, 1459455), (15, 1264861), (39, 486485), (65, 291891), (149, 127335), (195, 97297), (447, 42445), (653, 29055), (745, 25467), (1937, 9795), (1959, 9685), (2235, 8489), (3265, 5811)]