79740040

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{18289}}^1$

素因数の和:18409

約数の個数: 32

約数和(自身を含む): 181071000

約数和(自身を除く): 101330960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 18289, 36578, 73156, 91445, 146312, 182890, 365780, 731560, 1993501, 3987002, 7974004, 9967505, 15948008, 19935010, 39870020, 79740040]

約数ペア:

[(1, 79740040), (2, 39870020), (4, 19935010), (5, 15948008), (8, 9967505), (10, 7974004), (20, 3987002), (40, 1993501), (109, 731560), (218, 365780), (436, 182890), (545, 146312), (872, 91445), (1090, 73156), (2180, 36578), (4360, 18289)]