388959640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{251}}^1\times {\mathrm{2039}}^1$

素因数の和:2320

約数の個数: 64

約数和(自身を含む): 925344000

約数和(自身を除く): 536384360

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 251, 380, 502, 760, 1004, 1255, 2008, 2039, 2510, 4078, 4769, 5020, 8156, 9538, 10040, 10195, 16312, 19076, 20390, 23845, 38152, 38741, 40780, 47690, 77482, 81560, 95380, 154964, 190760, 193705, 309928, 387410, 511789, 774820, 1023578, 1549640, 2047156, 2558945, 4094312, 5117890, 9723991, 10235780, 19447982, 20471560, 38895964, 48619955, 77791928, 97239910, 194479820, 388959640]

約数ペア:

[(1, 388959640), (2, 194479820), (4, 97239910), (5, 77791928), (8, 48619955), (10, 38895964), (19, 20471560), (20, 19447982), (38, 10235780), (40, 9723991), (76, 5117890), (95, 4094312), (152, 2558945), (190, 2047156), (251, 1549640), (380, 1023578), (502, 774820), (760, 511789), (1004, 387410), (1255, 309928), (2008, 193705), (2039, 190760), (2510, 154964), (4078, 95380), (4769, 81560), (5020, 77482), (8156, 47690), (9538, 40780), (10040, 38741), (10195, 38152), (16312, 23845), (19076, 20390)]