242994920

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{89}}^1\times {\mathrm{199}}^1$

素因数の和:320

約数の個数: 128

約数和(自身を含む): 648000000

約数和(自身を除く): 405005080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 89, 98, 140, 178, 196, 199, 245, 280, 343, 356, 392, 398, 445, 490, 623, 686, 712, 796, 890, 980, 995, 1246, 1372, 1393, 1592, 1715, 1780, 1960, 1990, 2492, 2744, 2786, 3115, 3430, 3560, 3980, 4361, 4984, 5572, 6230, 6860, 6965, 7960, 8722, 9751, 11144, 12460, 13720, 13930, 17444, 17711, 19502, 21805, 24920, 27860, 30527, 34888, 35422, 39004, 43610, 48755, 55720, 61054, 68257, 70844, 78008, 87220, 88555, 97510, 122108, 123977, 136514, 141688, 152635, 174440, 177110, 195020, 244216, 247954, 273028, 305270, 341285, 354220, 390040, 495908, 546056, 610540, 619885, 682570, 708440, 867839, 991816, 1221080, 1239770, 1365140, 1735678, 2479540, 2730280, 3471356, 4339195, 4959080, 6074873, 6942712, 8678390, 12149746, 17356780, 24299492, 30374365, 34713560, 48598984, 60748730, 121497460, 242994920]

約数ペア:

[(1, 242994920), (2, 121497460), (4, 60748730), (5, 48598984), (7, 34713560), (8, 30374365), (10, 24299492), (14, 17356780), (20, 12149746), (28, 8678390), (35, 6942712), (40, 6074873), (49, 4959080), (56, 4339195), (70, 3471356), (89, 2730280), (98, 2479540), (140, 1735678), (178, 1365140), (196, 1239770), (199, 1221080), (245, 991816), (280, 867839), (343, 708440), (356, 682570), (392, 619885), (398, 610540), (445, 546056), (490, 495908), (623, 390040), (686, 354220), (712, 341285), (796, 305270), (890, 273028), (980, 247954), (995, 244216), (1246, 195020), (1372, 177110), (1393, 174440), (1592, 152635), (1715, 141688), (1780, 136514), (1960, 123977), (1990, 122108), (2492, 97510), (2744, 88555), (2786, 87220), (3115, 78008), (3430, 70844), (3560, 68257), (3980, 61054), (4361, 55720), (4984, 48755), (5572, 43610), (6230, 39004), (6860, 35422), (6965, 34888), (7960, 30527), (8722, 27860), (9751, 24920), (11144, 21805), (12460, 19502), (13720, 17711), (13930, 17444)]