280330760

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{349}}^1\times {\mathrm{467}}^1$

素因数の和:870

約数の個数: 64

約数和(自身を含む): 648648000

約数和(自身を除く): 368317240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 349, 430, 467, 698, 860, 934, 1396, 1720, 1745, 1868, 2335, 2792, 3490, 3736, 4670, 6980, 9340, 13960, 15007, 18680, 20081, 30014, 40162, 60028, 75035, 80324, 100405, 120056, 150070, 160648, 162983, 200810, 300140, 325966, 401620, 600280, 651932, 803240, 814915, 1303864, 1629830, 3259660, 6519320, 7008269, 14016538, 28033076, 35041345, 56066152, 70082690, 140165380, 280330760]

約数ペア:

[(1, 280330760), (2, 140165380), (4, 70082690), (5, 56066152), (8, 35041345), (10, 28033076), (20, 14016538), (40, 7008269), (43, 6519320), (86, 3259660), (172, 1629830), (215, 1303864), (344, 814915), (349, 803240), (430, 651932), (467, 600280), (698, 401620), (860, 325966), (934, 300140), (1396, 200810), (1720, 162983), (1745, 160648), (1868, 150070), (2335, 120056), (2792, 100405), (3490, 80324), (3736, 75035), (4670, 60028), (6980, 40162), (9340, 30014), (13960, 20081), (15007, 18680)]