1640398480

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{13499}}^1$

素因数の和:13557

約数の個数: 120

約数和(自身を含む): 4580064000

約数和(自身を除く): 2939665520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 49, 56, 62, 70, 80, 98, 112, 124, 140, 155, 196, 217, 245, 248, 280, 310, 392, 434, 490, 496, 560, 620, 784, 868, 980, 1085, 1240, 1519, 1736, 1960, 2170, 2480, 3038, 3472, 3920, 4340, 6076, 7595, 8680, 12152, 13499, 15190, 17360, 24304, 26998, 30380, 53996, 60760, 67495, 94493, 107992, 121520, 134990, 188986, 215984, 269980, 377972, 418469, 472465, 539960, 661451, 755944, 836938, 944930, 1079920, 1322902, 1511888, 1673876, 1889860, 2092345, 2645804, 2929283, 3307255, 3347752, 3779720, 4184690, 5291608, 5858566, 6614510, 6695504, 7559440, 8369380, 10583216, 11717132, 13229020, 14646415, 16738760, 20504981, 23434264, 26458040, 29292830, 33477520, 41009962, 46868528, 52916080, 58585660, 82019924, 102524905, 117171320, 164039848, 205049810, 234342640, 328079696, 410099620, 820199240, 1640398480]

約数ペア:

[(1, 1640398480), (2, 820199240), (4, 410099620), (5, 328079696), (7, 234342640), (8, 205049810), (10, 164039848), (14, 117171320), (16, 102524905), (20, 82019924), (28, 58585660), (31, 52916080), (35, 46868528), (40, 41009962), (49, 33477520), (56, 29292830), (62, 26458040), (70, 23434264), (80, 20504981), (98, 16738760), (112, 14646415), (124, 13229020), (140, 11717132), (155, 10583216), (196, 8369380), (217, 7559440), (245, 6695504), (248, 6614510), (280, 5858566), (310, 5291608), (392, 4184690), (434, 3779720), (490, 3347752), (496, 3307255), (560, 2929283), (620, 2645804), (784, 2092345), (868, 1889860), (980, 1673876), (1085, 1511888), (1240, 1322902), (1519, 1079920), (1736, 944930), (1960, 836938), (2170, 755944), (2480, 661451), (3038, 539960), (3472, 472465), (3920, 418469), (4340, 377972), (6076, 269980), (7595, 215984), (8680, 188986), (12152, 134990), (13499, 121520), (15190, 107992), (17360, 94493), (24304, 67495), (26998, 60760), (30380, 53996)]