78212980

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{64109}}^1$

素因数の和:64179

約数の個数: 24

約数和(自身を含む): 166942440

約数和(自身を除く): 88729460

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 64109, 128218, 256436, 320545, 641090, 1282180, 3910649, 7821298, 15642596, 19553245, 39106490, 78212980]

約数ペア:

[(1, 78212980), (2, 39106490), (4, 19553245), (5, 15642596), (10, 7821298), (20, 3910649), (61, 1282180), (122, 641090), (244, 320545), (305, 256436), (610, 128218), (1220, 64109)]