64816280

素因数分解:

$2^3\times 5^1\times {\mathrm{349}}^1\times {\mathrm{4643}}^1$

素因数の和:5003

約数の個数: 32

約数和(自身を含む): 146286000

約数和(自身を除く): 81469720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 349, 698, 1396, 1745, 2792, 3490, 4643, 6980, 9286, 13960, 18572, 23215, 37144, 46430, 92860, 185720, 1620407, 3240814, 6481628, 8102035, 12963256, 16204070, 32408140, 64816280]

約数ペア:

[(1, 64816280), (2, 32408140), (4, 16204070), (5, 12963256), (8, 8102035), (10, 6481628), (20, 3240814), (40, 1620407), (349, 185720), (698, 92860), (1396, 46430), (1745, 37144), (2792, 23215), (3490, 18572), (4643, 13960), (6980, 9286)]