12325720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{257}}^1$

素因数の和:388

約数の個数: 64

約数和(自身を含む): 30650400

約数和(自身を除く): 18324680

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 109, 110, 218, 220, 257, 436, 440, 514, 545, 872, 1028, 1090, 1199, 1285, 2056, 2180, 2398, 2570, 2827, 4360, 4796, 5140, 5654, 5995, 9592, 10280, 11308, 11990, 14135, 22616, 23980, 28013, 28270, 47960, 56026, 56540, 112052, 113080, 140065, 224104, 280130, 308143, 560260, 616286, 1120520, 1232572, 1540715, 2465144, 3081430, 6162860, 12325720]

約数ペア:

[(1, 12325720), (2, 6162860), (4, 3081430), (5, 2465144), (8, 1540715), (10, 1232572), (11, 1120520), (20, 616286), (22, 560260), (40, 308143), (44, 280130), (55, 224104), (88, 140065), (109, 113080), (110, 112052), (218, 56540), (220, 56026), (257, 47960), (436, 28270), (440, 28013), (514, 23980), (545, 22616), (872, 14135), (1028, 11990), (1090, 11308), (1199, 10280), (1285, 9592), (2056, 5995), (2180, 5654), (2398, 5140), (2570, 4796), (2827, 4360)]