820199240

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{13499}}^1$

素因数の和:13555

約数の個数: 96

約数和(自身を含む): 2216160000

約数和(自身を除く): 1395960760

約数列:

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

約数ペア:

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