77135980

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{257}}^1\times {\mathrm{349}}^1$

素因数の和:658

約数の個数: 48

約数和(自身を含む): 166874400

約数和(自身を除く): 89738420

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 257, 349, 430, 514, 698, 860, 1028, 1285, 1396, 1745, 2570, 3490, 5140, 6980, 11051, 15007, 22102, 30014, 44204, 55255, 60028, 75035, 89693, 110510, 150070, 179386, 221020, 300140, 358772, 448465, 896930, 1793860, 3856799, 7713598, 15427196, 19283995, 38567990, 77135980]

約数ペア:

[(1, 77135980), (2, 38567990), (4, 19283995), (5, 15427196), (10, 7713598), (20, 3856799), (43, 1793860), (86, 896930), (172, 448465), (215, 358772), (257, 300140), (349, 221020), (430, 179386), (514, 150070), (698, 110510), (860, 89693), (1028, 75035), (1285, 60028), (1396, 55255), (1745, 44204), (2570, 30014), (3490, 22102), (5140, 15007), (6980, 11051)]