80018720

素因数分解:

$2^5\times 5^1\times {\mathrm{349}}^1\times {\mathrm{1433}}^1$

素因数の和:1797

約数の個数: 48

約数和(自身を含む): 189718200

約数和(自身を除く): 109699480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 349, 698, 1396, 1433, 1745, 2792, 2866, 3490, 5584, 5732, 6980, 7165, 11168, 11464, 13960, 14330, 22928, 27920, 28660, 45856, 55840, 57320, 114640, 229280, 500117, 1000234, 2000468, 2500585, 4000936, 5001170, 8001872, 10002340, 16003744, 20004680, 40009360, 80018720]

約数ペア:

[(1, 80018720), (2, 40009360), (4, 20004680), (5, 16003744), (8, 10002340), (10, 8001872), (16, 5001170), (20, 4000936), (32, 2500585), (40, 2000468), (80, 1000234), (160, 500117), (349, 229280), (698, 114640), (1396, 57320), (1433, 55840), (1745, 45856), (2792, 28660), (2866, 27920), (3490, 22928), (5584, 14330), (5732, 13960), (6980, 11464), (7165, 11168)]