645695784

素因数分解:

$2^3\times 3^2\times {\mathrm{157}}^1\times {\mathrm{239}}^2$

素因数の和:647

約数の個数: 72

約数和(自身を含む): 1767292410

約数和(自身を除く): 1121596626

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 157, 239, 314, 471, 478, 628, 717, 942, 956, 1256, 1413, 1434, 1884, 1912, 2151, 2826, 2868, 3768, 4302, 5652, 5736, 8604, 11304, 17208, 37523, 57121, 75046, 112569, 114242, 150092, 171363, 225138, 228484, 300184, 337707, 342726, 450276, 456968, 514089, 675414, 685452, 900552, 1028178, 1350828, 1370904, 2056356, 2701656, 4112712, 8967997, 17935994, 26903991, 35871988, 53807982, 71743976, 80711973, 107615964, 161423946, 215231928, 322847892, 645695784]

約数ペア:

[(1, 645695784), (2, 322847892), (3, 215231928), (4, 161423946), (6, 107615964), (8, 80711973), (9, 71743976), (12, 53807982), (18, 35871988), (24, 26903991), (36, 17935994), (72, 8967997), (157, 4112712), (239, 2701656), (314, 2056356), (471, 1370904), (478, 1350828), (628, 1028178), (717, 900552), (942, 685452), (956, 675414), (1256, 514089), (1413, 456968), (1434, 450276), (1884, 342726), (1912, 337707), (2151, 300184), (2826, 228484), (2868, 225138), (3768, 171363), (4302, 150092), (5652, 114242), (5736, 112569), (8604, 75046), (11304, 57121), (17208, 37523)]