261639352

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{1229}}^1$

素因数の和:1360

約数の個数: 64

約数和(自身を含む): 557928000

約数和(自身を除く): 296288648

約数列:

[1, 2, 4, 8, 13, 23, 26, 46, 52, 89, 92, 104, 178, 184, 299, 356, 598, 712, 1157, 1196, 1229, 2047, 2314, 2392, 2458, 4094, 4628, 4916, 8188, 9256, 9832, 15977, 16376, 26611, 28267, 31954, 53222, 56534, 63908, 106444, 109381, 113068, 127816, 212888, 218762, 226136, 367471, 437524, 734942, 875048, 1421953, 1469884, 2515763, 2843906, 2939768, 5031526, 5687812, 10063052, 11375624, 20126104, 32704919, 65409838, 130819676, 261639352]

約数ペア:

[(1, 261639352), (2, 130819676), (4, 65409838), (8, 32704919), (13, 20126104), (23, 11375624), (26, 10063052), (46, 5687812), (52, 5031526), (89, 2939768), (92, 2843906), (104, 2515763), (178, 1469884), (184, 1421953), (299, 875048), (356, 734942), (598, 437524), (712, 367471), (1157, 226136), (1196, 218762), (1229, 212888), (2047, 127816), (2314, 113068), (2392, 109381), (2458, 106444), (4094, 63908), (4628, 56534), (4916, 53222), (8188, 31954), (9256, 28267), (9832, 26611), (15977, 16376)]