138854240

素因数分解:

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

素因数の和:317

約数の個数: 144

約数和(自身を含む): 387828000

約数和(自身を除く): 248973760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 89, 98, 112, 140, 160, 178, 196, 199, 224, 245, 280, 356, 392, 398, 445, 490, 560, 623, 712, 784, 796, 890, 980, 995, 1120, 1246, 1393, 1424, 1568, 1592, 1780, 1960, 1990, 2492, 2786, 2848, 3115, 3184, 3560, 3920, 3980, 4361, 4984, 5572, 6230, 6368, 6965, 7120, 7840, 7960, 8722, 9751, 9968, 11144, 12460, 13930, 14240, 15920, 17444, 17711, 19502, 19936, 21805, 22288, 24920, 27860, 31840, 34888, 35422, 39004, 43610, 44576, 48755, 49840, 55720, 69776, 70844, 78008, 87220, 88555, 97510, 99680, 111440, 123977, 139552, 141688, 156016, 174440, 177110, 195020, 222880, 247954, 283376, 312032, 348880, 354220, 390040, 495908, 566752, 619885, 697760, 708440, 780080, 867839, 991816, 1239770, 1416880, 1560160, 1735678, 1983632, 2479540, 2833760, 3471356, 3967264, 4339195, 4959080, 6942712, 8678390, 9918160, 13885424, 17356780, 19836320, 27770848, 34713560, 69427120, 138854240]

約数ペア:

[(1, 138854240), (2, 69427120), (4, 34713560), (5, 27770848), (7, 19836320), (8, 17356780), (10, 13885424), (14, 9918160), (16, 8678390), (20, 6942712), (28, 4959080), (32, 4339195), (35, 3967264), (40, 3471356), (49, 2833760), (56, 2479540), (70, 1983632), (80, 1735678), (89, 1560160), (98, 1416880), (112, 1239770), (140, 991816), (160, 867839), (178, 780080), (196, 708440), (199, 697760), (224, 619885), (245, 566752), (280, 495908), (356, 390040), (392, 354220), (398, 348880), (445, 312032), (490, 283376), (560, 247954), (623, 222880), (712, 195020), (784, 177110), (796, 174440), (890, 156016), (980, 141688), (995, 139552), (1120, 123977), (1246, 111440), (1393, 99680), (1424, 97510), (1568, 88555), (1592, 87220), (1780, 78008), (1960, 70844), (1990, 69776), (2492, 55720), (2786, 49840), (2848, 48755), (3115, 44576), (3184, 43610), (3560, 39004), (3920, 35422), (3980, 34888), (4361, 31840), (4984, 27860), (5572, 24920), (6230, 22288), (6368, 21805), (6965, 19936), (7120, 19502), (7840, 17711), (7960, 17444), (8722, 15920), (9751, 14240), (9968, 13930), (11144, 12460)]