81702040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{2677}}^1$

素因数の和:2804

約数の個数: 64

約数和(自身を含む): 212097600

約数和(自身を除く): 130395560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 109, 140, 218, 280, 436, 545, 763, 872, 1090, 1526, 2180, 2677, 3052, 3815, 4360, 5354, 6104, 7630, 10708, 13385, 15260, 18739, 21416, 26770, 30520, 37478, 53540, 74956, 93695, 107080, 149912, 187390, 291793, 374780, 583586, 749560, 1167172, 1458965, 2042551, 2334344, 2917930, 4085102, 5835860, 8170204, 10212755, 11671720, 16340408, 20425510, 40851020, 81702040]

約数ペア:

[(1, 81702040), (2, 40851020), (4, 20425510), (5, 16340408), (7, 11671720), (8, 10212755), (10, 8170204), (14, 5835860), (20, 4085102), (28, 2917930), (35, 2334344), (40, 2042551), (56, 1458965), (70, 1167172), (109, 749560), (140, 583586), (218, 374780), (280, 291793), (436, 187390), (545, 149912), (763, 107080), (872, 93695), (1090, 74956), (1526, 53540), (2180, 37478), (2677, 30520), (3052, 26770), (3815, 21416), (4360, 18739), (5354, 15260), (6104, 13385), (7630, 10708)]