2091980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{257}}^1$

素因数の和:314

約数の個数: 48

約数和(自身を含む): 4941216

約数和(自身を除く): 2849236

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 37, 44, 55, 74, 110, 148, 185, 220, 257, 370, 407, 514, 740, 814, 1028, 1285, 1628, 2035, 2570, 2827, 4070, 5140, 5654, 8140, 9509, 11308, 14135, 19018, 28270, 38036, 47545, 56540, 95090, 104599, 190180, 209198, 418396, 522995, 1045990, 2091980]

約数ペア:

[(1, 2091980), (2, 1045990), (4, 522995), (5, 418396), (10, 209198), (11, 190180), (20, 104599), (22, 95090), (37, 56540), (44, 47545), (55, 38036), (74, 28270), (110, 19018), (148, 14135), (185, 11308), (220, 9509), (257, 8140), (370, 5654), (407, 5140), (514, 4070), (740, 2827), (814, 2570), (1028, 2035), (1285, 1628)]