80718860

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1\times {\mathrm{607}}^1$

素因数の和:786

約数の個数: 48

約数和(自身を含む): 174155520

約数和(自身を除く): 93436660

約数列:

[1, 2, 4, 5, 10, 20, 61, 109, 122, 218, 244, 305, 436, 545, 607, 610, 1090, 1214, 1220, 2180, 2428, 3035, 6070, 6649, 12140, 13298, 26596, 33245, 37027, 66163, 66490, 74054, 132326, 132980, 148108, 185135, 264652, 330815, 370270, 661630, 740540, 1323260, 4035943, 8071886, 16143772, 20179715, 40359430, 80718860]

約数ペア:

[(1, 80718860), (2, 40359430), (4, 20179715), (5, 16143772), (10, 8071886), (20, 4035943), (61, 1323260), (109, 740540), (122, 661630), (218, 370270), (244, 330815), (305, 264652), (436, 185135), (545, 148108), (607, 132980), (610, 132326), (1090, 74054), (1214, 66490), (1220, 66163), (2180, 37027), (2428, 33245), (3035, 26596), (6070, 13298), (6649, 12140)]