20213854520

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{26893}}^1$

素因数の和:26989

約数の個数: 128

約数和(自身を含む): 51120115200

約数和(自身を除く): 30906260680

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 23, 38, 40, 43, 46, 76, 86, 92, 95, 115, 152, 172, 184, 190, 215, 230, 344, 380, 430, 437, 460, 760, 817, 860, 874, 920, 989, 1634, 1720, 1748, 1978, 2185, 3268, 3496, 3956, 4085, 4370, 4945, 6536, 7912, 8170, 8740, 9890, 16340, 17480, 18791, 19780, 26893, 32680, 37582, 39560, 53786, 75164, 93955, 107572, 134465, 150328, 187910, 215144, 268930, 375820, 510967, 537860, 618539, 751640, 1021934, 1075720, 1156399, 1237078, 2043868, 2312798, 2474156, 2554835, 3092695, 4087736, 4625596, 4948312, 5109670, 5781995, 6185390, 9251192, 10219340, 11563990, 11752241, 12370780, 20438680, 21971581, 23127980, 23504482, 24741560, 26597177, 43943162, 46255960, 47008964, 53194354, 58761205, 87886324, 94017928, 106388708, 109857905, 117522410, 132985885, 175772648, 212777416, 219715810, 235044820, 265971770, 439431620, 470089640, 505346363, 531943540, 878863240, 1010692726, 1063887080, 2021385452, 2526731815, 4042770904, 5053463630, 10106927260, 20213854520]

約数ペア:

[(1, 20213854520), (2, 10106927260), (4, 5053463630), (5, 4042770904), (8, 2526731815), (10, 2021385452), (19, 1063887080), (20, 1010692726), (23, 878863240), (38, 531943540), (40, 505346363), (43, 470089640), (46, 439431620), (76, 265971770), (86, 235044820), (92, 219715810), (95, 212777416), (115, 175772648), (152, 132985885), (172, 117522410), (184, 109857905), (190, 106388708), (215, 94017928), (230, 87886324), (344, 58761205), (380, 53194354), (430, 47008964), (437, 46255960), (460, 43943162), (760, 26597177), (817, 24741560), (860, 23504482), (874, 23127980), (920, 21971581), (989, 20438680), (1634, 12370780), (1720, 11752241), (1748, 11563990), (1978, 10219340), (2185, 9251192), (3268, 6185390), (3496, 5781995), (3956, 5109670), (4085, 4948312), (4370, 4625596), (4945, 4087736), (6536, 3092695), (7912, 2554835), (8170, 2474156), (8740, 2312798), (9890, 2043868), (16340, 1237078), (17480, 1156399), (18791, 1075720), (19780, 1021934), (26893, 751640), (32680, 618539), (37582, 537860), (39560, 510967), (53786, 375820), (75164, 268930), (93955, 215144), (107572, 187910), (134465, 150328)]