81568280

素因数分解:

$2^3\times 5^1\times {\mathrm{349}}^1\times {\mathrm{5843}}^1$

素因数の和:6203

約数の個数: 32

約数和(自身を含む): 184086000

約数和(自身を除く): 102517720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 349, 698, 1396, 1745, 2792, 3490, 5843, 6980, 11686, 13960, 23372, 29215, 46744, 58430, 116860, 233720, 2039207, 4078414, 8156828, 10196035, 16313656, 20392070, 40784140, 81568280]

約数ペア:

[(1, 81568280), (2, 40784140), (4, 20392070), (5, 16313656), (8, 10196035), (10, 8156828), (20, 4078414), (40, 2039207), (349, 233720), (698, 116860), (1396, 58430), (1745, 46744), (2792, 29215), (3490, 23372), (5843, 13960), (6980, 11686)]